January 2014 - developers - lists.mariadb.org

[Maria-developers] Need Review: MDEV-5509: Seconds_behind_master incorrect in parallel replication in http://bazaar.launchpad.net/~maria-captains/maria/10.0
by Kristian Nielsen 08 Jan '14

08 Jan '14

Could someone review this patch for MDEV-5509? I am in particular worried that this might change some subtle behaviour of Seconds_Behind_Master in unexpected ways. Of course I tried my best to make sure such could not occur, but the semantics is really tricky and poorly documented, and I do not think we have good coverage in the test suite. So I would like to have one other developer check it carefully as well and see if I've missed something. - Kristian. knielsen(a)knielsen-hq.org writes: > At http://bazaar.launchpad.net/~maria-captains/maria/10.0 > > ------------------------------------------------------------ > revno: 3959 > revision-id: knielsen(a)knielsen-hq.org-20140108100044-iszrbhddvxkfne71 > parent: knielsen(a)knielsen-hq.org-20140107105703-sn31yvf80batk1yx > committer: knielsen(a)knielsen-hq.org > branch nick: mariadb-10.0-base > timestamp: Wed 2014-01-08 11:00:44 +0100 > message: > MDEV-5509: Seconds_behind_master incorrect in parallel replication > > The problem was a race between the SQL driver thread and the worker threads. > The SQL driver thread would set rli->last_master_timestamp to zero to > mark that it has caught up with the master, while the worker threads would > set it to the timestamp of the executed event. This can happen out-of-order > in parallel replication, causing the "caught up" status to be overwritten > and Seconds_Behind_Master to wrongly grow when the slave is idle. > > To fix, introduce a separate flag rli->sql_thread_caught_up to mark that the > SQL driver thread is caught up. This avoids issues with worker threads > overwriting the SQL driver thread status. In parallel replication, we then > make SHOW SLAVE STATUS check in addition that all worker threads are idle > before showing Seconds_Behind_Master as 0 due to slave idle. > === added file 'mysql-test/suite/rpl/r/rpl_parallel2.result' > --- a/mysql-test/suite/rpl/r/rpl_parallel2.result 1970-01-01 00:00:00 +0000 > +++ b/mysql-test/suite/rpl/r/rpl_parallel2.result 2014-01-08 10:00:44 +0000 > @@ -0,0 +1,18 @@ > +include/rpl_init.inc [topology=1->2] > +*** MDEV-5509: Incorrect value for Seconds_Behind_Master if parallel replication *** > +SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads; > +include/stop_slave.inc > +SET GLOBAL slave_parallel_threads=5; > +include/start_slave.inc > +CREATE TABLE t1 (a INT PRIMARY KEY, b INT); > +CALL mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Statement is unsafe because it uses a system function that may return a different value on the slave"); > +INSERT INTO t1 VALUES (1,sleep(2)); > +Warnings: > +Note 1592 Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Statement is unsafe because it uses a system function that may return a different value on the slave. > +Seconds_Behind_Master should be zero here because the slave is fully caught up and idle. > +Seconds_Behind_Master = '0' > +include/stop_slave.inc > +SET GLOBAL slave_parallel_threads=@old_parallel_threads; > +include/start_slave.inc > +DROP TABLE t1; > +include/rpl_end.inc > > === added file 'mysql-test/suite/rpl/t/rpl_parallel2.test' > --- a/mysql-test/suite/rpl/t/rpl_parallel2.test 1970-01-01 00:00:00 +0000 > +++ b/mysql-test/suite/rpl/t/rpl_parallel2.test 2014-01-08 10:00:44 +0000 > @@ -0,0 +1,41 @@ > +--source include/have_binlog_format_statement.inc > +--let $rpl_topology=1->2 > +--source include/rpl_init.inc > + > +--echo *** MDEV-5509: Incorrect value for Seconds_Behind_Master if parallel replication *** > + > +--connection server_2 > +SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads; > +--source include/stop_slave.inc > +SET GLOBAL slave_parallel_threads=5; > +--source include/start_slave.inc > + > +--connection server_1 > +CREATE TABLE t1 (a INT PRIMARY KEY, b INT); > +CALL mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Statement is unsafe because it uses a system function that may return a different value on the slave"); > +--save_master_pos > + > +--connection server_2 > +--sync_with_master > + > +--connection server_1 > +INSERT INTO t1 VALUES (1,sleep(2)); > +--save_master_pos > + > +--connection server_2 > +--sync_with_master > + > +--echo Seconds_Behind_Master should be zero here because the slave is fully caught up and idle. > +--let $status_items= Seconds_Behind_Master > +--source include/show_slave_status.inc > + > + > +--connection server_2 > +--source include/stop_slave.inc > +SET GLOBAL slave_parallel_threads=@old_parallel_threads; > +--source include/start_slave.inc > + > +--connection server_1 > +DROP TABLE t1; > + > +--source include/rpl_end.inc > > === modified file 'sql/rpl_parallel.cc' > --- a/sql/rpl_parallel.cc 2014-01-03 11:20:53 +0000 > +++ b/sql/rpl_parallel.cc 2014-01-08 10:00:44 +0000 > @@ -766,6 +766,27 @@ rpl_parallel::wait_for_done() > } > > > +bool > +rpl_parallel::workers_idle() > +{ > + struct rpl_parallel_entry *e; > + uint32 i, max_i; > + > + max_i= domain_hash.records; > + for (i= 0; i < max_i; ++i) > + { > + bool active; > + e= (struct rpl_parallel_entry *)my_hash_element(&domain_hash, i); > + mysql_mutex_lock(&e->LOCK_parallel_entry); > + active= e->current_sub_id > e->last_committed_sub_id; > + mysql_mutex_unlock(&e->LOCK_parallel_entry); > + if (active) > + break; > + } > + return (i == max_i); > +} > + > + > /* > do_event() is executed by the sql_driver_thd thread. > It's main purpose is to find a thread that can execute the query. > > === modified file 'sql/rpl_parallel.h' > --- a/sql/rpl_parallel.h 2013-11-05 11:01:26 +0000 > +++ b/sql/rpl_parallel.h 2014-01-08 10:00:44 +0000 > @@ -117,6 +117,7 @@ struct rpl_parallel { > void reset(); > rpl_parallel_entry *find(uint32 domain_id); > void wait_for_done(); > + bool workers_idle(); > bool do_event(rpl_group_info *serial_rgi, Log_event *ev, > ulonglong event_size); > }; > > === modified file 'sql/rpl_rli.cc' > --- a/sql/rpl_rli.cc 2013-12-17 09:50:34 +0000 > +++ b/sql/rpl_rli.cc 2014-01-08 10:00:44 +0000 > @@ -56,7 +56,7 @@ Relay_log_info::Relay_log_info(bool is_s > is_fake(FALSE), > #endif > group_master_log_pos(0), log_space_total(0), ignore_log_space_limit(0), > - last_master_timestamp(0), slave_skip_counter(0), > + last_master_timestamp(0), sql_thread_caught_up(true), slave_skip_counter(0), > abort_pos_wait(0), slave_run_id(0), sql_driver_thd(), > inited(0), abort_slave(0), slave_running(0), until_condition(UNTIL_NONE), > until_log_pos(0), retried_trans(0), executed_entries(0), > @@ -1287,9 +1287,14 @@ void Relay_log_info::stmt_done(my_off_t > (probably ok - except in some very rare cases, only consequence > is that value may take some time to display in > Seconds_Behind_Master - not critical). > + > + In parallel replication, we take care to not set last_master_timestamp > + backwards, in case of out-of-order calls here. > */ > if (!(event_creation_time == 0 && > - IF_DBUG(debug_not_change_ts_if_art_event > 0, 1))) > + IF_DBUG(debug_not_change_ts_if_art_event > 0, 1)) && > + !(rgi->is_parallel_exec && event_creation_time <= last_master_timestamp) > + ) > last_master_timestamp= event_creation_time; > } > DBUG_VOID_RETURN; > > === modified file 'sql/rpl_rli.h' > --- a/sql/rpl_rli.h 2013-11-08 14:14:18 +0000 > +++ b/sql/rpl_rli.h 2014-01-08 10:00:44 +0000 > @@ -221,6 +221,12 @@ class Relay_log_info : public Slave_repo > bool sql_force_rotate_relay; > > time_t last_master_timestamp; > + /* > + The SQL driver thread sets this true while it is waiting at the end of the > + relay log for more events to arrive. SHOW SLAVE STATUS uses this to report > + Seconds_Behind_Master as zero while the SQL thread is so waiting. > + */ > + bool sql_thread_caught_up; > > void clear_until_condition(); > > > === modified file 'sql/slave.cc' > --- a/sql/slave.cc 2013-12-16 12:48:32 +0000 > +++ b/sql/slave.cc 2014-01-08 10:00:44 +0000 > @@ -2615,8 +2615,24 @@ static bool send_show_master_info_data(T > if ((mi->slave_running == MYSQL_SLAVE_RUN_CONNECT) && > mi->rli.slave_running) > { > - long time_diff= ((long)(time(0) - mi->rli.last_master_timestamp) > - - mi->clock_diff_with_master); > + long time_diff; > + bool idle; > + time_t stamp= mi->rli.last_master_timestamp; > + > + if (!stamp) > + idle= true; > + else > + { > + idle= mi->rli.sql_thread_caught_up; > + if (opt_slave_parallel_threads > 0 && idle && > + !mi->rli.parallel.workers_idle()) > + idle= false; > + } > + if (idle) > + time_diff= 0; > + else > + { > + time_diff= ((long)(time(0) - stamp) - mi->clock_diff_with_master); > /* > Apparently on some systems time_diff can be <0. Here are possible > reasons related to MySQL: > @@ -2632,13 +2648,15 @@ static bool send_show_master_info_data(T > slave is 2. At SHOW SLAVE STATUS time, assume that the difference > between timestamp of slave and rli->last_master_timestamp is 0 > (i.e. they are in the same second), then we get 0-(2-1)=-1 as a result. > - This confuses users, so we don't go below 0: hence the max(). > + This confuses users, so we don't go below 0. > > last_master_timestamp == 0 (an "impossible" timestamp 1970) is a > special marker to say "consider we have caught up". > */ > - protocol->store((longlong)(mi->rli.last_master_timestamp ? > - max(0, time_diff) : 0)); > + if (time_diff < 0) > + time_diff= 0; > + } > + protocol->store((longlong)time_diff); > } > else > { > @@ -6096,6 +6114,7 @@ static Log_event* next_event(rpl_group_i > > if (hot_log) > mysql_mutex_unlock(log_lock); > + rli->sql_thread_caught_up= false; > DBUG_RETURN(ev); > } > if (opt_reckless_slave) // For mysql-test > @@ -6133,12 +6152,10 @@ static Log_event* next_event(rpl_group_i > Seconds_Behind_Master would be zero only when master has no > more updates in binlog for slave. The heartbeat can be sent > in a (small) fraction of slave_net_timeout. Until it's done > - rli->last_master_timestamp is temporarely (for time of > - waiting for the following event) reset whenever EOF is > - reached. > + rli->sql_thread_caught_up is temporarely (for time of waiting for > + the following event) set whenever EOF is reached. > */ > - time_t save_timestamp= rli->last_master_timestamp; > - rli->last_master_timestamp= 0; > + rli->sql_thread_caught_up= true; > > DBUG_ASSERT(rli->relay_log.get_open_count() == > rli->cur_log_old_open_count); > @@ -6264,7 +6281,7 @@ static Log_event* next_event(rpl_group_i > rli->relay_log.wait_for_update_relay_log(rli->sql_driver_thd); > // re-acquire data lock since we released it earlier > mysql_mutex_lock(&rli->data_lock); > - rli->last_master_timestamp= save_timestamp; > + rli->sql_thread_caught_up= false; > continue; > } > /* > > _______________________________________________ > commits mailing list > commits(a)mariadb.org > https://lists.askmonty.org/cgi-bin/mailman/listinfo/commits

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[Maria-developers] Correct way to determine the ThreadPool usage
by Jean Weisbuch 07 Jan '14

07 Jan '14

Hello, I am counter-checking the mysqlreport "fork" i am maintening (https://mariadb.atlassian.net/browse/MDEV-573) so it could be included in Maria 10 before GA, i am actually unsure that i am checking correctly the Threadpool usage. For these stats (with thread_pool_max_threads=1200 and thread_handling=pool-of-threads) : +------------------------------------------+---------+ | Variable_name | Value | +------------------------------------------+---------+ | Threadpool_idle_threads | 47 | | Threadpool_threads | 52 | | Threads_cached | 0 | | Threads_connected | 19 | | Threads_created | 599771 | | Threads_running | 6 | +------------------------------------------+---------+ The actual output is : __ Threads ___________________________________________ Running 6 of 24 Created 599.77k 0.2/s Slow 0 0/s Threadpool 98 of 1200 %Used: 8.17 Running 52 of 1200 %Running: 4.33 Idle 46 of 1200 %Idle: 3.83 The formulae used are : Threadpool $stats{'Threadpool_threads'} + $stats{'Threadpool_idle_threads'}) of $vars{'thread_pool_max_threads'} %Used: percentage( ($stats{'Threadpool_threads'} + $stats{'Threadpool_idle_threads'}) / $vars{'thread_pool_max_threads'} Running $stats{'Threadpool_threads'} of $vars{'thread_pool_max_threads'} %Running: percentage($stats{'Threadpool_threads'} / $vars{'thread_pool_max_threads'}) Idle $stats{'Threadpool_idle_threads'} of $vars{'thread_pool_max_threads'} %Idle: percentage($stats{'Threadpool_idle_threads'} / $vars{'thread_pool_max_threads'}) Is the Threadpool usage calculation right or should only the Threadpool_threads status be used? What is the meaning of the Threads_connected value when the threadpool is used? Regards.

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[Maria-developers] Elena please test: (MDEV-4974) memory leak in 5.5.32-MariaDB-1~wheezy-log
by Sergei Petrunia 03 Jan '14

03 Jan '14

Hi Elena, Could you please test the below? The changed code may affect - queries that use GROUP BY/ORDER BY/DISTINCT, or a combination of those. - correlated/uncorrelated subqueries. The subquery should remain a separate SELECT, i.e. it should not be converted into semi-join or optimized away. - combination of the above. The code adds a cleanup, so I expect a possible problem to be where we cleaned up something we shouldn't have. Most likely effects are either crash or wrong result. I don't think this patch has a chance of introducing a memory leak. ----- Forwarded message from "Sergei Petrunia (JIRA)" <jira(a)mariadb.atlassian.net> ----- Date: Fri, 3 Jan 2014 21:26:24 +0200 (EET) From: "Sergei Petrunia (JIRA)" <jira(a)mariadb.atlassian.net> To: psergey(a)montyprogram.com Subject: [JIRA] (MDEV-4974) memory leak in 5.5.32-MariaDB-1~wheezy-log [ https://mariadb.atlassian.net/browse/MDEV-4974?page=com.atlassian.jira.plug… ] Sergei Petrunia commented on MDEV-4974: ---------------------------------------- Elena, could you please test 5.5 tree, patched with psergey-fix-mdev4954.diff ? > memory leak in 5.5.32-MariaDB-1~wheezy-log > ------------------------------------------ > > Key: MDEV-4974 > URL: https://mariadb.atlassian.net/browse/MDEV-4974 > Project: MariaDB Development > Issue Type: Bug > Affects Versions: 5.5.32 > Environment: Debian Wheezy x86_64 > Linux greeneggs.lentz.com.au 3.9.3-x86_64-linode33 #1 SMP Mon May 20 10:22:57 EDT 2013 x86_64 GNU/Linux > Reporter: Daniel Black > Assignee: Sergei Petrunia > Priority: Critical > Fix For: 5.5.35 > > Attachments: allqueries.sql, catinthehat_memory-day_no_indexmerge.png, drupal.sql, green-eggs-mysql_connections-day.png, greeneggs-memory-day.png, greeneggs-memory-week.png, greeneggs-mysql_bin_relay_log-day.png, greeneggs-mysql_commands-day.png, greeneggs-mysql_files_tables-day.png, greeneggs-mysql_innodb_bpool-day.png, greeneggs-mysql_innodb_semaphores-day.png, greeneggs-mysql_innodb_tnx-day.png, greeneggs-mysql_myisam_indexes-day.png, greeneggs-mysql_qcache-day.png, greeneggs-mysql_select_types-day.png, greeneggs-mysql_sorts-day.png, greeneggs-mysql_table_locks-day.png, greeneggs-mysql_tmp_tables-day.png, leaks-track-allqueries.sql, leaks-track.sql, psergey-fix-mdev4954.diff, psergey-mdev4974-xpl1.diff, valgrind.mysqld.27336 > > > After running mariadb-5.5.32 in a multimaster for a few days its almost out of memory on the active master (the one getting all the reads). > The replication slave (same version) doesn't suffer the memory leak (with or without the replication filters defined). > Disabling the query cache on the active master may (was slightly off peak) have slowed the memory leak however it wasn't stopped. In the graph attached the query cache was disabled from Wed 5:30 to Thursday 03:00 > For greeneggs-mysql_commands-day.png the first drop is when query cache was turned back on. At the end I moved the active master to the other server. Other graphs are for this same time interval. > Memory usage calculation: > From http://dev.mysql.com/doc/refman/5.5/en/memory-use.html > per connection: > @read_buffer_size + @read_rnd_buffer_size + @sort_buffer_size + @join_buffer_size + @binlog_cache_size + @thread_stack + @@tmp_table_size = 19070976 > Max_used_connections 15 > Static component: > @key_buffer_size + @query_cache_size + @innodb_buffer_pool_size + @innodb_additional_mem_pool_size + @@innodb_log_buffer_size > 322961408 > select 15 * 19070976 + 322961408; = 609026048 > 609M max > From top: > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 4532 mysql 20 0 1999m 1.4g 6072 S 4.0 71.9 1017:21 mysqld > I've still got the server running if more status is required. > show engine innodb status > ===================================== > 130830 0:46:23 INNODB MONITOR OUTPUT > ===================================== > Per second averages calculated from the last 17 seconds > ----------------- > BACKGROUND THREAD > ----------------- > srv_master_thread loops: 372124 1_second, 372076 sleeps, 37113 10_second, 1716 background, 1715 flush > srv_master_thread log flush and writes: 350597 > ---------- > SEMAPHORES > ---------- > OS WAIT ARRAY INFO: reservation count 999301, signal count 1149136 > Mutex spin waits 3647275, rounds 12020660, OS waits 198769 > RW-shared spins 896419, rounds 19893071, OS waits 574516 > RW-excl spins 68006, rounds 6887165, OS waits 204958 > Spin rounds per wait: 3.30 mutex, 22.19 RW-shared, 101.27 RW-excl > -------- > FILE I/O > -------- > I/O thread 0 state: waiting for completed aio requests (insert buffer thread) > I/O thread 1 state: waiting for completed aio requests (log thread) > I/O thread 2 state: waiting for completed aio requests (read thread) > I/O thread 3 state: waiting for completed aio requests (read thread) > I/O thread 4 state: waiting for completed aio requests (write thread) > I/O thread 5 state: waiting for completed aio requests (write thread) > Pending normal aio reads: 0 [0, 0] , aio writes: 0 [0, 0] , > ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0 > Pending flushes (fsync) log: 0; buffer pool: 0 > 7906118 OS file reads, 39186717 OS file writes, 23493355 OS fsyncs > 0.65 reads/s, 16384 avg bytes/read, 66.29 writes/s, 29.06 fsyncs/s > ------------------------------------- > INSERT BUFFER AND ADAPTIVE HASH INDEX > ------------------------------------- > Ibuf: size 1, free list len 287, seg size 289, 111478 merges > merged operations: > insert 106175, delete mark 100854, delete 13481 > discarded operations: > insert 0, delete mark 0, delete 0 > Hash table size 553229, node heap has 584 buffer(s) > 244.87 hash searches/s, 22.53 non-hash searches/s > --- > LOG > --- > Log sequence number 1981376581482 > Log flushed up to 1981376581482 > Last checkpoint at 1981376562791 > Max checkpoint age 84223550 > Checkpoint age target 81591565 > Modified age 18691 > Checkpoint age 18691 > 0 pending log writes, 0 pending chkp writes > 22419510 log i/o's done, 26.00 log i/o's/second > ---------------------- > BUFFER POOL AND MEMORY > ---------------------- > Total memory allocated 275644416; in additional pool allocated 0 > Total memory allocated by read views 136 > Internal hash tables (constant factor + variable factor) > Adaptive hash index 13998304 (4425832 + 9572472) > Page hash 277432 (buffer pool 0 only) > Dictionary cache 10287074 (1107952 + 9179122) > File system 648160 (82672 + 565488) > Lock system 665688 (664936 + 752) > Recovery system 0 (0 + 0) > Dictionary memory allocated 9179122 > Buffer pool size 16383 > Buffer pool size, bytes 268419072 > Free buffers 1 > Database pages 15798 > Old database pages 5811 > Modified db pages 97 > Pending reads 0 > Pending writes: LRU 0, flush list 0, single page 0 > Pages made young 10760065, not young 0 > 0.53 youngs/s, 0.00 non-youngs/s > Pages read 7903370, created 882751, written 16452888 > 0.65 reads/s, 0.00 creates/s, 39.47 writes/s > Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000 > Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s > LRU len: 15798, unzip_LRU len: 0 > I/O sum[1550]:cur[322], unzip sum[0]:cur[0] > -------------- > ROW OPERATIONS > -------------- > 0 queries inside InnoDB, 0 queries in queue > 1 read views open inside InnoDB > 0 transactions active inside InnoDB > 0 out of 1000 descriptors used > ---OLDEST VIEW--- > Normal read view > Read view low limit trx n:o 7D2D2F07 > Read view up limit trx id 7D2D2F07 > Read view low limit trx id 7D2D2F07 > Read view individually stored trx ids: > ----------------- > Main thread process no. 4532, id 140201824495360, state: sleeping > Number of rows inserted 1308400, updated 9736429, deleted 1227755, read 34888786828 > 1.00 inserts/s, 11.71 updates/s, 0.00 deletes/s, 249.22 reads/s > ------------------------ > LATEST DETECTED DEADLOCK > ------------------------ > 130830 0:27:15 > *** (1) TRANSACTION: > TRANSACTION 7D2C63D3, ACTIVE 0 sec starting index read > | Variable_name | Value | > | Aborted_clients | 57 | > | Aborted_connects | 0 | > | Access_denied_errors | 0 | > | Aria_pagecache_blocks_not_flushed | 0 | > | Aria_pagecache_blocks_unused | 15737 | > | Aria_pagecache_blocks_used | 3127 | > | Aria_pagecache_read_requests | 262055553 | > | Aria_pagecache_reads | 107163 | > | Aria_pagecache_write_requests | 69866678 | > | Aria_pagecache_writes | 0 | > | Aria_transaction_log_syncs | 0 | > | Binlog_commits | 12529081 | > | Binlog_group_commits | 12486299 | > | Binlog_snapshot_file | mariadb-bin.001408 | > | Binlog_snapshot_position | 57228334 | > | Binlog_bytes_written | 43273655871 | > | Binlog_cache_disk_use | 768128 | > | Binlog_cache_use | 12510967 | > | Binlog_stmt_cache_disk_use | 24 | > | Binlog_stmt_cache_use | 18077 | > | Busy_time | 0.000000 | > | Bytes_received | 60129853267 | > | Bytes_sent | 691695773018 | > | Com_admin_commands | 3809 | > | Com_assign_to_keycache | 0 | > | Com_alter_db | 0 | > | Com_alter_db_upgrade | 0 | > | Com_alter_event | 0 | > | Com_alter_function | 0 | > | Com_alter_procedure | 0 | > | Com_alter_server | 0 | > | Com_alter_table | 114 | > | Com_alter_tablespace | 0 | > | Com_analyze | 0 | > | Com_begin | 62278 | > | Com_binlog | 0 | > | Com_call_procedure | 0 | > | Com_change_db | 69728 | > | Com_change_master | 0 | > | Com_check | 1426 | > | Com_checksum | 0 | > | Com_commit | 45717 | > | Com_create_db | 1 | > | Com_create_event | 0 | > | Com_create_function | 0 | > | Com_create_index | 0 | > | Com_create_procedure | 1 | > | Com_create_server | 0 | > | Com_create_table | 42 | > | Com_create_trigger | 0 | > | Com_create_udf | 0 | > | Com_create_user | 0 | > | Com_create_view | 0 | > | Com_dealloc_sql | 24 | > | Com_delete | 388136 | > | Com_delete_multi | 5 | > | Com_do | 0 | > | Com_drop_db | 1 | > | Com_drop_event | 0 | > | Com_drop_function | 0 | > | Com_drop_index | 0 | > | Com_drop_procedure | 2 | > | Com_drop_server | 0 | > | Com_drop_table | 1 | > | Com_drop_trigger | 0 | > | Com_drop_user | 0 | > | Com_drop_view | 0 | > | Com_empty_query | 0 | > | Com_execute_sql | 24 | > | Com_flush | 6 | > | Com_grant | 0 | > | Com_ha_close | 0 | > | Com_ha_open | 0 | > | Com_ha_read | 0 | > | Com_help | 2 | > | Com_insert | 847948 | > | Com_insert_select | 551 | > | Com_install_plugin | 0 | > | Com_kill | 50 | > | Com_load | 0 | > | Com_lock_tables | 0 | > | Com_optimize | 0 | > | Com_preload_keys | 0 | > | Com_prepare_sql | 24 | > | Com_purge | 0 | > | Com_purge_before_date | 0 | > | Com_release_savepoint | 0 | > | Com_rename_table | 0 | > | Com_rename_user | 0 | > | Com_repair | 0 | > | Com_replace | 0 | > | Com_replace_select | 0 | > | Com_reset | 0 | > | Com_resignal | 0 | > | Com_revoke | 0 | > | Com_revoke_all | 0 | > | Com_rollback | 3 | > | Com_rollback_to_savepoint | 0 | > | Com_savepoint | 0 | > | Com_select | 47174988 | > | Com_set_option | 1189075 | > | Com_signal | 0 | > | Com_show_authors | 0 | > | Com_show_binlog_events | 3 | > | Com_show_binlogs | 1166 | > | Com_show_charsets | 0 | > | Com_show_client_statistics | 0 | > | Com_show_collations | 0 | > | Com_show_contributors | 0 | > | Com_show_create_db | 115 | > | Com_show_create_event | 0 | > | Com_show_create_func | 0 | > | Com_show_create_proc | 0 | > | Com_show_create_table | 4387 | > | Com_show_create_trigger | 0 | > | Com_show_databases | 7 | > | Com_show_engine_logs | 0 | > | Com_show_engine_mutex | 0 | > | Com_show_engine_status | 1167 | > | Com_show_events | 0 | > | Com_show_errors | 0 | > | Com_show_fields | 5721 | > | Com_show_function_status | 0 | > | Com_show_grants | 0 | > | Com_show_keys | 0 | > | Com_show_index_statistics | 0 | > | Com_show_master_status | 1 | > | Com_show_open_tables | 0 | > | Com_show_plugins | 0 | > | Com_show_privileges | 0 | > | Com_show_procedure_status | 0 | > | Com_show_processlist | 1039 | > | Com_show_profile | 0 | > | Com_show_profiles | 0 | > | Com_show_relaylog_events | 0 | > | Com_show_slave_hosts | 0 | > | Com_show_slave_status | 140780 | > | Com_show_status | 12670 | > | Com_show_storage_engines | 0 | > | Com_show_table_statistics | 0 | > | Com_show_table_status | 4287 | > | Com_show_tables | 6794 | > | Com_show_triggers | 4280 | > | Com_show_user_statistics | 0 | > | Com_show_variables | 2175 | > | Com_show_warnings | 0 | > | Com_slave_start | 10 | > | Com_slave_stop | 4 | > | Com_stmt_close | 24 | > | Com_stmt_execute | 24 | > | Com_stmt_fetch | 0 | > | Com_stmt_prepare | 24 | > | Com_stmt_reprepare | 0 | > | Com_stmt_reset | 0 | > | Com_stmt_send_long_data | 0 | > | Com_truncate | 0 | > | Com_uninstall_plugin | 0 | > | Com_unlock_tables | 2 | > | Com_update | 7082015 | > | Com_update_multi | 1 | > | Com_xa_commit | 0 | > | Com_xa_end | 0 | > | Com_xa_prepare | 0 | > | Com_xa_recover | 0 | > | Com_xa_rollback | 0 | > | Com_xa_start | 0 | > | Compression | OFF | > | Connections | 1164212 | > | Cpu_time | 0.000000 | > | Created_tmp_disk_tables | 2202858 | > | Created_tmp_files | 420678 | > | Created_tmp_tables | 5264753 | > | Delayed_errors | 0 | > | Delayed_insert_threads | 0 | > | Delayed_writes | 0 | > | Empty_queries | 14900340 | > | Executed_events | 0 | > | Executed_triggers | 0 | > | Feature_dynamic_columns | 0 | > | Feature_fulltext | 2 | > | Feature_gis | 28 | > | Feature_locale | 0 | > | Feature_subquery | 135848 | > | Feature_timezone | 6850 | > | Feature_trigger | 586 | > | Feature_xml | 0 | > | Flush_commands | 4 | > | Handler_commit | 63318523 | > | Handler_delete | 748245 | > | Handler_discover | 0 | > | Handler_icp_attempts | 71118314 | > | Handler_icp_match | 71108704 | > | Handler_mrr_init | 0 | > | Handler_mrr_key_refills | 0 | > | Handler_mrr_rowid_refills | 0 | > | Handler_prepare | 14968970 | > | Handler_read_first | 1155850 | > | Handler_read_key | 466199920 | > | Handler_read_last | 55346 | > | Handler_read_next | 27258307498 | > | Handler_read_prev | 8491322 | > | Handler_read_rnd | 66364460 | > | Handler_read_rnd_deleted | 1194 | > | Handler_read_rnd_next | 8174479457 | > | Handler_rollback | 21990 | > | Handler_savepoint | 0 | > | Handler_savepoint_rollback | 0 | > | Handler_tmp_update | 15018397 | > | Handler_tmp_write | 515819305 | > | Handler_update | 6481729 | > | Handler_write | 849123 | > | Innodb_adaptive_hash_cells | 553229 | > | Innodb_adaptive_hash_heap_buffers | 581 | > | Innodb_adaptive_hash_hash_searches | 1107671046 | > | Innodb_adaptive_hash_non_hash_searches | 249488632 | > | Innodb_background_log_sync | 350697 | > | Innodb_buffer_pool_pages_data | 15800 | > | Innodb_buffer_pool_bytes_data | 258867200 | > | Innodb_buffer_pool_pages_dirty | 295 | > | Innodb_buffer_pool_bytes_dirty | 4833280 | > | Innodb_buffer_pool_pages_flushed | 16456234 | > | Innodb_buffer_pool_pages_LRU_flushed | 48422 | > | Innodb_buffer_pool_pages_free | 1 | > | Innodb_buffer_pool_pages_made_not_young | 0 | > | Innodb_buffer_pool_pages_made_young | 10760117 | > | Innodb_buffer_pool_pages_misc | 582 | > | Innodb_buffer_pool_pages_old | 5812 | > | Innodb_buffer_pool_pages_total | 16383 | > | Innodb_buffer_pool_read_ahead_rnd | 0 | > | Innodb_buffer_pool_read_ahead | 2072088 | > | Innodb_buffer_pool_read_ahead_evicted | 91126 | > | Innodb_buffer_pool_read_requests | 10973288017 | > | Innodb_buffer_pool_reads | 5715842 | > | Innodb_buffer_pool_wait_free | 9 | > | Innodb_buffer_pool_write_requests | 132620870 | > | Innodb_checkpoint_age | 88015 | > | Innodb_checkpoint_max_age | 84223550 | > | Innodb_checkpoint_target_age | 81591565 | > | Innodb_data_fsyncs | 23497491 | > | Innodb_data_pending_fsyncs | 0 | > | Innodb_data_pending_reads | 0 | > | Innodb_data_pending_writes | 0 | > | Innodb_data_read | 129493962752 | > | Innodb_data_reads | 7906173 | > | Innodb_data_writes | 39194030 | > | Innodb_data_written | 586483447808 | > | Innodb_dblwr_pages_written | 16456234 | > | Innodb_dblwr_writes | 182242 | > | Innodb_deadlocks | 432 | > | Innodb_dict_tables | 1315 | > | Innodb_have_atomic_builtins | ON | > | Innodb_history_list_length | 3523 | > | Innodb_ibuf_discarded_delete_marks | 0 | > | Innodb_ibuf_discarded_deletes | 0 | > | Innodb_ibuf_discarded_inserts | 0 | > | Innodb_ibuf_free_list | 287 | > | Innodb_ibuf_merged_delete_marks | 100855 | > | Innodb_ibuf_merged_deletes | 13481 | > | Innodb_ibuf_merged_inserts | 106192 | > | Innodb_ibuf_merges | 111495 | > | Innodb_ibuf_segment_size | 289 | > | Innodb_ibuf_size | 1 | > | Innodb_log_waits | 0 | > | Innodb_log_write_requests | 73751900 | > | Innodb_log_writes | 22385577 | > | Innodb_lsn_current | 1981377626218 | > | Innodb_lsn_flushed | 1981377626218 | > | Innodb_lsn_last_checkpoint | 1981377538203 | > | Innodb_master_thread_1_second_loops | 372239 | > | Innodb_master_thread_10_second_loops | 37124 | > | Innodb_master_thread_background_loops | 1716 | > | Innodb_master_thread_main_flush_loops | 1715 | > | Innodb_master_thread_sleeps | 372191 | > | Innodb_max_trx_id | 2100117045 | > | Innodb_mem_adaptive_hash | 13965536 | > | Innodb_mem_dictionary | 10287074 | > | Innodb_mem_total | 275644416 | > | Innodb_mutex_os_waits | 198788 | > | Innodb_mutex_spin_rounds | 12021403 | > | Innodb_mutex_spin_waits | 3647342 | > | Innodb_oldest_view_low_limit_trx_id | 2100116933 | > | Innodb_os_log_fsyncs | 22425791 | > | Innodb_os_log_pending_fsyncs | 0 | > | Innodb_os_log_pending_writes | 0 | > | Innodb_os_log_written | 47227117568 | > | Innodb_page_size | 16384 | > | Innodb_pages_created | 882752 | > | Innodb_pages_read | 7903425 | > | Innodb_pages_written | 16456234 | > | Innodb_purge_trx_id | 2100116933 | > | Innodb_purge_undo_no | 0 | > | Innodb_row_lock_current_waits | 0 | > | Innodb_current_row_locks | 0 | > | Innodb_row_lock_time | 3209772 | > | Innodb_row_lock_time_avg | 74 | > | Innodb_row_lock_time_max | 31935 | > | Innodb_row_lock_waits | 43208 | > | Innodb_rows_deleted | 1227755 | > | Innodb_rows_inserted | 1308502 | > | Innodb_rows_read | 34888819968 | > | Innodb_rows_updated | 9738262 | > | Innodb_read_views_memory | 136 | > | Innodb_descriptors_memory | 8000 | > | Innodb_s_lock_os_waits | 574527 | > | Innodb_s_lock_spin_rounds | 19893402 | > | Innodb_s_lock_spin_waits | 896432 | > | Innodb_truncated_status_writes | 0 | > | Innodb_x_lock_os_waits | 204987 | > | Innodb_x_lock_spin_rounds | 6888035 | > | Innodb_x_lock_spin_waits | 68006 | > | Key_blocks_not_flushed | 0 | > | Key_blocks_unused | 5353 | > | Key_blocks_used | 4170 | > | Key_blocks_warm | 141 | > | Key_read_requests | 6295929 | > | Key_reads | 9626 | > | Key_write_requests | 21159 | > | Key_writes | 10962 | > | Last_query_cost | 0.000000 | > | Max_used_connections | 15 | > | Not_flushed_delayed_rows | 0 | > | Open_files | 142 | > | Open_streams | 0 | > | Open_table_definitions | 397 | > | Open_tables | 595 | > | Opened_files | 9756380 | > | Opened_table_definitions | 6425 | > | Opened_tables | 8666 | > | Opened_views | 0 | > | Performance_schema_cond_classes_lost | 0 | > | Performance_schema_cond_instances_lost | 0 | > | Performance_schema_file_classes_lost | 0 | > | Performance_schema_file_handles_lost | 0 | > | Performance_schema_file_instances_lost | 0 | > | Performance_schema_locker_lost | 0 | > | Performance_schema_mutex_classes_lost | 0 | > | Performance_schema_mutex_instances_lost | 0 | > | Performance_schema_rwlock_classes_lost | 0 | > | Performance_schema_rwlock_instances_lost | 0 | > | Performance_schema_table_handles_lost | 0 | > | Performance_schema_table_instances_lost | 0 | > | Performance_schema_thread_classes_lost | 0 | > | Performance_schema_thread_instances_lost | 0 | > | Prepared_stmt_count | 0 | > | Qcache_free_blocks | 6616 | > | Qcache_free_memory | 18486664 | > | Qcache_hits | 75724207 | > | Qcache_inserts | 8304484 | > | Qcache_lowmem_prunes | 1719071 | > | Qcache_not_cached | 2443705 | > | Qcache_queries_in_cache | 8992 | > | Qcache_total_blocks | 24978 | > | Queries | 142821923 | > | Questions | 133827961 | > | Rows_read | 35275818740 | > | Rows_sent | 1787826753 | > | Rows_tmp_read | 592687087 | > | Rpl_status | AUTH_MASTER | > | Select_full_join | 268533 | > | Select_full_range_join | 6393 | > | Select_range | 6218451 | > | Select_range_check | 0 | > | Select_scan | 3587397 | > | Slave_heartbeat_period | 1800.000 | > | Slave_open_temp_tables | 0 | > | Slave_received_heartbeats | 0 | > | Slave_retried_transactions | 0 | > | Slave_running | ON | > | Slow_launch_threads | 0 | > | Slow_queries | 3796864 | > | Sort_merge_passes | 269513 | > | Sort_range | 170798 | > | Sort_rows | 1870364969 | > | Sort_scan | 4917255 | > | Sphinx_error | | > | Sphinx_time | | > | Sphinx_total | | > | Sphinx_total_found | | > | Sphinx_word_count | | > | Sphinx_words | | > | Ssl_accept_renegotiates | 0 | > | Ssl_accepts | 0 | > | Ssl_callback_cache_hits | 0 | > | Ssl_cipher | | > | Ssl_cipher_list | | > | Ssl_client_connects | 0 | > | Ssl_connect_renegotiates | 0 | > | Ssl_ctx_verify_depth | 0 | > | Ssl_ctx_verify_mode | 0 | > | Ssl_default_timeout | 0 | > | Ssl_finished_accepts | 0 | > | Ssl_finished_connects | 0 | > | Ssl_session_cache_hits | 0 | > | Ssl_session_cache_misses | 0 | > | Ssl_session_cache_mode | NONE | > | Ssl_session_cache_overflows | 0 | > | Ssl_session_cache_size | 0 | > | Ssl_session_cache_timeouts | 0 | > | Ssl_sessions_reused | 0 | > | Ssl_used_session_cache_entries | 0 | > | Ssl_verify_depth | 0 | > | Ssl_verify_mode | 0 | > | Ssl_version | | > | Subquery_cache_hit | 4512 | > | Subquery_cache_miss | 3930 | > | Syncs | 4171361 | > | Table_locks_immediate | 85865730 | > | Table_locks_waited | 15 | > | Tc_log_max_pages_used | 0 | > | Tc_log_page_size | 0 | > | Tc_log_page_waits | 46 | > | Threadpool_idle_threads | 0 | > | Threadpool_threads | 0 | > | Threads_cached | 13 | > | Threads_connected | 2 | > | Threads_created | 15 | > | Threads_running | 2 | > | Uptime | 349494 | > | Uptime_since_flush_status | 349494 | > | Variable_name | Value | > | aria_block_size | 8192 | > | aria_checkpoint_interval | 30 | > | aria_checkpoint_log_activity | 1048576 | > | aria_force_start_after_recovery_failures | 0 | > | aria_group_commit | none | > | aria_group_commit_interval | 0 | > | aria_log_file_size | 1073741824 | > | aria_log_purge_type | immediate | > | aria_max_sort_file_size | 9223372036853727232 | > | aria_page_checksum | ON | > | aria_pagecache_age_threshold | 300 | > | aria_pagecache_buffer_size | 134217728 | > | aria_pagecache_division_limit | 100 | > | aria_recover | NORMAL | > | aria_repair_threads | 1 | > | aria_sort_buffer_size | 134217728 | > | aria_stats_method | nulls_unequal | > | aria_sync_log_dir | NEWFILE | > | aria_used_for_temp_tables | ON | > | auto_increment_increment | 2 | > | auto_increment_offset | 2 | > | autocommit | ON | > | automatic_sp_privileges | ON | > | back_log | 50 | > | basedir | /usr | > | big_tables | OFF | > | binlog_annotate_row_events | OFF | > | binlog_cache_size | 32768 | > | binlog_checksum | NONE | > | binlog_direct_non_transactional_updates | OFF | > | binlog_format | MIXED | > | binlog_optimize_thread_scheduling | ON | > | binlog_stmt_cache_size | 32768 | > | bulk_insert_buffer_size | 1048576 | > | character_set_client | latin1 | > | character_set_connection | latin1 | > | character_set_database | latin1 | > | character_set_filesystem | binary | > | character_set_results | latin1 | > | character_set_server | latin1 | > | character_set_system | utf8 | > | character_sets_dir | /usr/share/mysql/charsets/ | > | collation_connection | latin1_swedish_ci | > | collation_database | latin1_swedish_ci | > | collation_server | latin1_swedish_ci | > | completion_type | NO_CHAIN | > | concurrent_insert | ALWAYS | > | connect_timeout | 5 | > | datadir | /var/lib/mysql/ | > | date_format | %Y-%m-%d | > | datetime_format | %Y-%m-%d %H:%i:%s | > | deadlock_search_depth_long | 15 | > | deadlock_search_depth_short | 4 | > | deadlock_timeout_long | 50000000 | > | deadlock_timeout_short | 10000 | > | debug_no_thread_alarm | OFF | > | default_storage_engine | InnoDB | > | default_week_format | 0 | > | delay_key_write | ON | > | delayed_insert_limit | 100 | > | delayed_insert_timeout | 300 | > | delayed_queue_size | 1000 | > | div_precision_increment | 4 | > | engine_condition_pushdown | OFF | > | event_scheduler | OFF | > | expensive_subquery_limit | 100 | > | expire_logs_days | 3 | > | extra_max_connections | 1 | > | extra_port | 0 | > | flush | OFF | > | flush_time | 0 | > | foreign_key_checks | ON | > | ft_boolean_syntax | + -><()~*:""&| | > | ft_max_word_len | 84 | > | ft_min_word_len | 4 | > | ft_query_expansion_limit | 20 | > | ft_stopword_file | (built-in) | > | general_log | OFF | > | general_log_file | greeneggs.log | > | group_concat_max_len | 1024 | > | have_compress | YES | > | have_crypt | YES | > | have_csv | YES | > | have_dynamic_loading | YES | > | have_geometry | YES | > | have_innodb | YES | > | have_ndbcluster | NO | > | have_openssl | DISABLED | > | have_partitioning | YES | > | have_profiling | YES | > | have_query_cache | YES | > | have_rtree_keys | YES | > | have_ssl | DISABLED | > | have_symlink | YES | > | hostname | greeneggs.lentz.com.au | > | ignore_builtin_innodb | OFF | > | ignore_db_dirs | | > | init_connect | | > | init_file | | > | init_slave | | > | innodb_adaptive_flushing | ON | > | innodb_adaptive_flushing_method | estimate | > | innodb_adaptive_hash_index | ON | > | innodb_adaptive_hash_index_partitions | 1 | > | innodb_additional_mem_pool_size | 8388608 | > | innodb_autoextend_increment | 8 | > | innodb_autoinc_lock_mode | 1 | > | innodb_blocking_buffer_pool_restore | OFF | > | innodb_buffer_pool_instances | 1 | > | innodb_buffer_pool_populate | OFF | > | innodb_buffer_pool_restore_at_startup | 600 | > | innodb_buffer_pool_shm_checksum | ON | > | innodb_buffer_pool_shm_key | 0 | > | innodb_buffer_pool_size | 268435456 | > | innodb_change_buffering | all | > | innodb_checkpoint_age_target | 0 | > | innodb_checksums | ON | > | innodb_commit_concurrency | 0 | > | innodb_concurrency_tickets | 500 | > | innodb_corrupt_table_action | assert | > | innodb_data_file_path | ibdata1:10M:autoextend | > | innodb_data_home_dir | | > | innodb_dict_size_limit | 0 | > | innodb_doublewrite | ON | > | innodb_doublewrite_file | | > | innodb_fake_changes | OFF | > | innodb_fast_checksum | OFF | > | innodb_fast_shutdown | 1 | > | innodb_file_format | Antelope | > | innodb_file_format_check | ON | > | innodb_file_format_max | Antelope | > | innodb_file_per_table | ON | > | innodb_flush_log_at_trx_commit | 1 | > | innodb_flush_method | O_DIRECT | > | innodb_flush_neighbor_pages | area | > | innodb_force_load_corrupted | OFF | > | innodb_force_recovery | 0 | > | innodb_ibuf_accel_rate | 100 | > | innodb_ibuf_active_contract | 1 | > | innodb_ibuf_max_size | 134201344 | > | innodb_import_table_from_xtrabackup | 0 | > | innodb_io_capacity | 1000 | > | innodb_kill_idle_transaction | 0 | > | innodb_large_prefix | OFF | > | innodb_lazy_drop_table | 0 | > | innodb_lock_wait_timeout | 50 | > | innodb_locking_fake_changes | ON | > | innodb_locks_unsafe_for_binlog | OFF | > | innodb_log_block_size | 512 | > | innodb_log_buffer_size | 4194304 | > | innodb_log_file_size | 52428800 | > | innodb_log_files_in_group | 2 | > | innodb_log_group_home_dir | ./ | > | innodb_max_bitmap_file_size | 104857600 | > | innodb_max_changed_pages | 1000000 | > | innodb_max_dirty_pages_pct | 75 | > | innodb_max_purge_lag | 0 | > | innodb_merge_sort_block_size | 1048576 | > | innodb_mirrored_log_groups | 1 | > | innodb_old_blocks_pct | 37 | > | innodb_old_blocks_time | 0 | > | innodb_open_files | 400 | > | innodb_page_size | 16384 | > | innodb_print_all_deadlocks | OFF | > | innodb_purge_batch_size | 20 | > | innodb_purge_threads | 1 | > | innodb_random_read_ahead | OFF | > | innodb_read_ahead | linear | > | innodb_read_ahead_threshold | 56 | > | innodb_read_io_threads | 2 | > | innodb_recovery_stats | OFF | > | innodb_recovery_update_relay_log | OFF | > | innodb_replication_delay | 0 | > | innodb_rollback_on_timeout | OFF | > | innodb_rollback_segments | 128 | > | innodb_show_locks_held | 10 | > | innodb_show_verbose_locks | 0 | > | innodb_spin_wait_delay | 6 | > | innodb_stats_auto_update | 1 | > | innodb_stats_method | nulls_equal | > | innodb_stats_on_metadata | ON | > | innodb_stats_sample_pages | 8 | > | innodb_stats_update_need_lock | 1 | > | innodb_strict_mode | OFF | > | innodb_support_xa | ON | > | innodb_sync_spin_loops | 30 | > | innodb_table_locks | ON | > | innodb_thread_concurrency | 0 | > | innodb_thread_concurrency_timer_based | OFF | > | innodb_thread_sleep_delay | 10000 | > | innodb_track_changed_pages | OFF | > | innodb_use_atomic_writes | OFF | > | innodb_use_fallocate | OFF | > | innodb_use_global_flush_log_at_trx_commit | ON | > | innodb_use_native_aio | ON | > | innodb_use_sys_malloc | ON | > | innodb_use_sys_stats_table | OFF | > | innodb_version | 5.5.32-MariaDB-30.2 | > | innodb_write_io_threads | 2 | > | interactive_timeout | 28800 | > | join_buffer_size | 131072 | > | join_buffer_space_limit | 2097152 | > | join_cache_level | 2 | > | keep_files_on_create | OFF | > | key_buffer_size | 8388608 | > | key_cache_age_threshold | 300 | > | key_cache_block_size | 1024 | > | key_cache_division_limit | 100 | > | key_cache_segments | 0 | > | large_files_support | ON | > | large_page_size | 0 | > | large_pages | OFF | > | lc_messages | en_US | > | lc_messages_dir | /usr/share/mysql | > | lc_time_names | en_US | > | license | GPL | > | local_infile | ON | > | lock_wait_timeout | 31536000 | > | locked_in_memory | OFF | > | log | OFF | > | log_bin | ON | > | log_bin_trust_function_creators | OFF | > | log_error | | > | log_output | FILE | > | log_queries_not_using_indexes | ON | > | log_slave_updates | ON | > | log_slow_filter | admin,filesort,filesort_on_disk,full_join,full_scan,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk | > | log_slow_queries | ON | > | log_slow_rate_limit | 1 | > | log_slow_verbosity | query_plan | > | log_warnings | 2 | > | long_query_time | 3.000000 | > | low_priority_updates | OFF | > | lower_case_file_system | OFF | > | lower_case_table_names | 0 | > | master_verify_checksum | OFF | > | max_allowed_packet | 16777216 | > | max_binlog_cache_size | 18446744073709547520 | > | max_binlog_size | 104857600 | > | max_binlog_stmt_cache_size | 18446744073709547520 | > | max_connect_errors | 10 | > | max_connections | 100 | > | max_delayed_threads | 20 | > | max_error_count | 64 | > | max_heap_table_size | 16777216 | > | max_insert_delayed_threads | 20 | > | max_join_size | 18446744073709551615 | > | max_length_for_sort_data | 1024 | > | max_long_data_size | 16777216 | > | max_prepared_stmt_count | 16382 | > | max_relay_log_size | 0 | > | max_seeks_for_key | 4294967295 | > | max_sort_length | 1024 | > | max_sp_recursion_depth | 0 | > | max_tmp_tables | 32 | > | max_user_connections | 0 | > | max_write_lock_count | 4294967295 | > | metadata_locks_cache_size | 1024 | > | min_examined_row_limit | 0 | > | mrr_buffer_size | 262144 | > | multi_range_count | 256 | > | myisam_block_size | 1024 | > | myisam_data_pointer_size | 6 | > | myisam_max_sort_file_size | 9223372036853727232 | > | myisam_mmap_size | 18446744073709551615 | > | myisam_recover_options | BACKUP,QUICK | > | myisam_repair_threads | 1 | > | myisam_sort_buffer_size | 536870912 | > | myisam_stats_method | nulls_unequal | > | myisam_use_mmap | OFF | > | net_buffer_length | 16384 | > | net_read_timeout | 30 | > | net_retry_count | 10 | > | net_write_timeout | 60 | > | old | OFF | > | old_alter_table | OFF | > | old_passwords | OFF | > | open_files_limit | 2159 | > | optimizer_prune_level | 1 | > | optimizer_search_depth | 62 | > | optimizer_switch | index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=off | > | performance_schema | OFF | > | performance_schema_events_waits_history_long_size | 10000 | > | performance_schema_events_waits_history_size | 10 | > | performance_schema_max_cond_classes | 80 | > | performance_schema_max_cond_instances | 1000 | > | performance_schema_max_file_classes | 50 | > | performance_schema_max_file_handles | 32768 | > | performance_schema_max_file_instances | 10000 | > | performance_schema_max_mutex_classes | 200 | > | performance_schema_max_mutex_instances | 1000000 | > | performance_schema_max_rwlock_classes | 30 | > | performance_schema_max_rwlock_instances | 1000000 | > | performance_schema_max_table_handles | 100000 | > | performance_schema_max_table_instances | 50000 | > | performance_schema_max_thread_classes | 50 | > | performance_schema_max_thread_instances | 1000 | > | pid_file | /var/run/mysqld/mysqld.pid | > | plugin_dir | /usr/lib/mysql/plugin/ | > | plugin_maturity | unknown | > | port | 3306 | > | preload_buffer_size | 32768 | > | profiling | OFF | > | profiling_history_size | 15 | > | progress_report_time | 56 | > | protocol_version | 10 | > | query_alloc_block_size | 8192 | > | query_cache_limit | 131072 | > | query_cache_min_res_unit | 4096 | > | query_cache_size | 33554432 | > | query_cache_strip_comments | OFF | > | query_cache_type | ON | > | query_cache_wlock_invalidate | OFF | > | query_prealloc_size | 8192 | > | range_alloc_block_size | 4096 | > | read_buffer_size | 1048576 | > | read_only | ON | > | read_rnd_buffer_size | 524288 | > | relay_log | | > | relay_log_index | | > | relay_log_info_file | relay-log.info | > | relay_log_purge | ON | > | relay_log_recovery | OFF | > | relay_log_space_limit | 0 | > | replicate_annotate_row_events | OFF | > | replicate_do_db | | > | replicate_do_table | | > | replicate_events_marked_for_skip | replicate | > | replicate_ignore_db | | > | replicate_ignore_table | peoplesforum.cache | > | replicate_wild_do_table | | > | replicate_wild_ignore_table | peoplesforum.cache% | > | report_host | greeneggs | > | report_password | | > | report_port | 3306 | > | report_user | | > | rowid_merge_buff_size | 8388608 | > | rpl_recovery_rank | 0 | > | secure_auth | OFF | > | secure_file_priv | | > | server_id | 12302 | > | skip_external_locking | ON | > | skip_name_resolve | ON | > | skip_networking | OFF | > | skip_show_database | OFF | > | slave_compressed_protocol | OFF | > | slave_exec_mode | STRICT | > | slave_load_tmpdir | /tmp | > | slave_max_allowed_packet | 1073741824 | > | slave_net_timeout | 3600 | > | slave_skip_errors | 1062 | > | slave_sql_verify_checksum | ON | > | slave_transaction_retries | 10 | > | slave_type_conversions | | > | slow_launch_time | 2 | > | slow_query_log | ON | > | slow_query_log_file | /var/log/mysql/mariadb-slow.log | > | socket | /var/run/mysqld/mysqld.sock | > | sort_buffer_size | 262144 | > | sql_auto_is_null | OFF | > | sql_big_selects | ON | > | sql_big_tables | OFF | > | sql_buffer_result | OFF | > | sql_log_bin | ON | > | sql_log_off | OFF | > | sql_low_priority_updates | OFF | > | sql_max_join_size | 18446744073709551615 | > | sql_mode | NO_ENGINE_SUBSTITUTION | > | sql_notes | ON | > | sql_quote_show_create | ON | > | sql_safe_updates | OFF | > | sql_select_limit | 18446744073709551615 | > | sql_slave_skip_counter | 0 | > | sql_warnings | OFF | > | ssl_ca | | > | ssl_capath | | > | ssl_cert | | > | ssl_cipher | | > | ssl_key | | > | storage_engine | InnoDB | > | stored_program_cache | 256 | > | sync_binlog | 3 | > | sync_frm | ON | > | sync_master_info | 0 | > | sync_relay_log | 0 | > | sync_relay_log_info | 0 | > | system_time_zone | UTC | > | table_definition_cache | 400 | > | table_open_cache | 1024 | > | thread_cache_size | 128 | > | thread_concurrency | 10 | > | thread_handling | one-thread-per-connection | > | thread_pool_idle_timeout | 60 | > | thread_pool_max_threads | 500 | > | thread_pool_oversubscribe | 3 | > | thread_pool_size | 8 | > | thread_pool_stall_limit | 500 | > | thread_stack | 294912 | > | time_format | %H:%i:%s | > | time_zone | SYSTEM | > | timed_mutexes | OFF | > | tmp_table_size | 16777216 | > | tmpdir | /tmp | > | transaction_alloc_block_size | 8192 | > | transaction_prealloc_size | 4096 | > | tx_isolation | REPEATABLE-READ | > | unique_checks | ON | > | updatable_views_with_limit | YES | > | userstat | OFF | > | version | 5.5.32-MariaDB-1~wheezy-log | > | version_comment | mariadb.org binary distribution | > | version_compile_machine | x86_64 | > | version_compile_os | debian-linux-gnu | > | wait_timeout | 600 | > I'm planning on doing a debug build from MDEV-572 and maybe try to get valgrind to narrow it down (if that doesn't bring the server to a total halt). Better suggestions welcome. -- This message was sent by Atlassian JIRA (v6.2-OD-05-4#6207) ----- End forwarded message -----

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[Maria-developers] MDEV-5115 review
by Kristian Nielsen 02 Jan '14

02 Jan '14

Hi Serg, Here is my review of your MDEV-5115 patch. First, a general comment: Another way to fix this would be a smaller patch. It would not attempt to implement anything related to the new event types. Instead, it would just have a small bit of code that allows to read the binary format of the new event types, but it would represent them internally as the old type, just ignoring any of the extra information, which appears to be currently unused outside of NDB. Probably then it would also make sense to not implement the renaming of the old event types. There would just be three extra cases in Log_event::read_log_event(), and a bit of extra code in the *_rows_log_event construstructors to be able to ignore any extra info. However, I do not really have much against your approach of doing a partial merge to get code that is closer to what is in MySQL, if you prefer that. I mention it because we discussed briefly already on IRC whether a smaller patch could be enough. A few detailed comments below. Otherwise, while I would have probably done the minimal patch myself, I am ok with this way also. So ok to push after fixing the few commit and code comments mentioned below. - Kristian. > ------------------------------------------------------------ > revno: 3921 > revision-id: sergii(a)pisem.net-20131203192301-afokgpslfq0f3xg8 > parent: sergii(a)pisem.net-20131201111624-xe3f1ul6otcyvyom > fixes bug: https://mariadb.atlassian.net/browse/MDEV-5115 > committer: Sergei Golubchik <sergii(a)pisem.net> > branch nick: 10.0 > timestamp: Tue 2013-12-03 20:23:01 +0100 > message: > MDEV-5115 RBR from MySQL 5.6 to MariaDB 10.0 does not work > > Patially merge WL#5917, to understand v2 row events "Partially merge WL#5917, which introduces new event types for row-based binlogging. This is needed to be able to replicate from a >=5.6 MySQL master to a MariaDB slave." > === modified file 'mysql-test/suite/binlog/t/binlog_old_versions.test' > --- mysql-test/suite/binlog/t/binlog_old_versions.test 2013-04-09 21:27:41 +0000 > +++ mysql-test/suite/binlog/t/binlog_old_versions.test 2013-12-03 19:23:01 +0000 > @@ -24,6 +24,17 @@ > > source include/not_embedded.inc; > > +--echo ==== Read binlog with v2 row events ==== > + > +# Read binlog. > +--exec $MYSQL_BINLOG --local-load=$MYSQLTEST_VARDIR/tmp/ suite/binlog/std_data/ver_trunk_row_v2.001 | $MYSQL --local-infile=1 > +# Show result. > +SELECT * FROM t1 ORDER BY a; > +SELECT * FROM t2 ORDER BY a; > +SELECT COUNT(*) FROM t3; > +# Reset. > +DROP TABLE t1, t2, t3; > + > > --echo ==== Read modern binlog (version 5.1.23) ==== > Is this the only test we have of reading the v2 row event types? I think it is not a particularly good test, as it tests mysqlbinlog reading them, while the interesting thing is a slave receiving them from the master. Even though some code is shared between the two there are lots of differences as well. The better test would be to install the pre-generated binlog file manually on a master and have the slave replicate it. However, it is easy to end up spending too much time on setting up these replication tests and getting them to work reliably on all platforms, so maybe not worth it. Maybe a good compromise is to instead ask Elena to test it manually against a real MySQL 5.6 server - after all, that is the actual case we want to work. > === modified file 'sql/log_event.h' > --- sql/log_event.h 2013-11-01 11:00:11 +0000 > +++ sql/log_event.h 2013-12-03 19:23:01 +0000 > @@ -659,11 +663,11 @@ enum Log_event_type > PRE_GA_DELETE_ROWS_EVENT = 22, > > /* > - These event numbers are used from 5.1.16 and forward > + These event numbers are used from 5.1.16 until mysql-trunk-xx Please change this comment to explain the actual situation. Ie. that they are used in MariaDB, but not in MySQL >= 5.6. > @@ -677,6 +681,20 @@ enum Log_event_type > HEARTBEAT_LOG_EVENT= 27, > > /* > + In some situations, it is necessary to send over ignorable > + data to the slave: data that a slave can handle in case there > + is code for handling it, but which can be ignored if it is not > + recognized. > + */ > + IGNORABLE_LOG_EVENT= 28, > + ROWS_QUERY_LOG_EVENT= 29, Add a comment that these are MySQL 5.6 events that are unimplemented in MariaDB. (Do we need another MDEV to be able to replicate against a MySQL master that produces ROWS_QUERY_LOG_EVENT? It is quite similar to our ANNOTATE_ROWS_EVENT, IIRC). > + /* Version 2 of the Row events */ > + WRITE_ROWS_EVENT = 30, > + UPDATE_ROWS_EVENT = 31, > + DELETE_ROWS_EVENT = 32, Add comment that these are only generated by MySQL 5.6.

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