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[Maria-developers] WL#250 New (by Igor): Use the statistics from persistent statistical tables instead of the statistics provided by engine
by worklog-noreply＠askmonty.org 25 Mar '12

25 Mar '12

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: Use the statistics from persistent statistical tables instead of the statistics provided by engine CREATION DATE..: Sun, 25 Mar 2012, 17:36 SUPERVISOR.....: IMPLEMENTOR....: Igor COPIES TO......: Igor Monty Psergey Sergei Timour CATEGORY.......: Server-Sprint TASK ID........: 250 (http://askmonty.org/worklog/?tid=250) VERSION........: Server-5.6 STATUS.........: Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: 0 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: DESCRIPTION: This task adds the functionality that allows optionally to use use the statistics from persistent statistical tables (see MWL #248) instead the statistics provided by engine. ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v4.0.0)

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Re: [Maria-developers] [Commits] Improve filesort performance for small sorts
by Sergei Golubchik 24 Mar '12

24 Mar '12

Hi, Kristian! FYI: http://bazaar.launchpad.net/~mysql/mysql-server/trunk/revision/tor.didrikse… On Mar 24, knielsen(a)knielsen-hq.org wrote: > ------------------------------------------------------------ > revno: 3471 > revision-id: knielsen(a)knielsen-hq.org-20120324160859-6pzy6tcxvd6j4fbx > parent: monty(a)askmonty.org-20120323162239-h18wbqpbjz0p00jd > committer: knielsen(a)knielsen-hq.org > branch nick: mariadb-5.3 > timestamp: Sat 2012-03-24 17:08:59 +0100 > message: > Improve filesort performance for small sorts: Don't write pointers to records that we will never use. Regards, Sergei

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[Maria-developers] Igor please review: [Commits] Rev 3464: BUG#951937: Wrong result (missing rows) with semijoin+materialization, IN subquery, InnoDB, TEMPTABLE view in file:///home/psergey/dev2/5.3-look60/]
by Sergei Petrunia 24 Mar '12

24 Mar '12

Hello Igor, Could you please review the below: ----- Forwarded message from Sergey Petrunya <psergey(a)askmonty.org> ----- From: Sergey Petrunya <psergey(a)askmonty.org> To: commits(a)mariadb.org X-Mailer: mail (GNU Mailutils 1.2) Date: Sat, 24 Mar 2012 01:40:02 +0400 (GST) Subject: [Commits] Rev 3464: BUG#951937: Wrong result (missing rows) with semijoin+materialization, IN subquery, InnoDB, TEMPTABLE view in file:///home/psergey/dev2/5.3-look60/ At file:///home/psergey/dev2/5.3-look60/ ------------------------------------------------------------ revno: 3464 revision-id: psergey(a)askmonty.org-20120323213956-ohxb9jitekne7yya parent: psergey(a)askmonty.org-20120321071820-t2azo8xxlm73mezd committer: Sergey Petrunya <psergey(a)askmonty.org> branch nick: 5.3-look60 timestamp: Sat 2012-03-24 01:39:56 +0400 message: BUG#951937: Wrong result (missing rows) with semijoin+materialization, IN subquery, InnoDB, TEMPTABLE view - Fix equality propagation to work with SJM nests and OR clauses (full descirption of problem and solution in the comment in the patch) === modified file 'mysql-test/r/subselect_sj2.result' --- a/mysql-test/r/subselect_sj2.result 2012-02-25 00:50:22 +0000 +++ b/mysql-test/r/subselect_sj2.result 2012-03-23 21:39:56 +0000 @@ -903,5 +903,48 @@ 3 1 1 4 1 1 DROP TABLE t1,t2; +# +# BUG#951937: Wrong result (missing rows) with semijoin+materialization, IN subquery, InnoDB, TEMPTABLE view +# +CREATE TABLE t1 ( +a VARCHAR(1), +b VARCHAR(1) NOT NULL, +KEY(a) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES +('j','j'),('v','v'),('c','c'),('m','m'),('d','d'), +('y','y'),('t','t'),('d','d'),('s','s'),('r','r'), +('m','m'),('b','b'),('x','x'),('g','g'),('p','p'), +('q','q'),('w','w'),('d','d'),('e','e'); +CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1; +SELECT * FROM v1 +WHERE ( a, a ) IN ( +SELECT alias2.b, alias2.a +FROM t1 AS alias1, t1 AS alias2 +WHERE alias2.b = alias1.a +AND ( alias1.b >= alias1.a OR alias2.b = 'z' ) +); +a b +j j +v v +c c +m m +m m +d d +d d +d d +y y +t t +s s +r r +b b +x x +g g +p p +q q +w w +e e +DROP VIEW v1; +DROP TABLE t1; # This must be the last in the file: set optimizer_switch=@subselect_sj2_tmp; === modified file 'mysql-test/r/subselect_sj2_jcl6.result' --- a/mysql-test/r/subselect_sj2_jcl6.result 2012-02-25 00:50:22 +0000 +++ b/mysql-test/r/subselect_sj2_jcl6.result 2012-03-23 21:39:56 +0000 @@ -917,6 +917,49 @@ 3 1 1 4 1 1 DROP TABLE t1,t2; +# +# BUG#951937: Wrong result (missing rows) with semijoin+materialization, IN subquery, InnoDB, TEMPTABLE view +# +CREATE TABLE t1 ( +a VARCHAR(1), +b VARCHAR(1) NOT NULL, +KEY(a) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES +('j','j'),('v','v'),('c','c'),('m','m'),('d','d'), +('y','y'),('t','t'),('d','d'),('s','s'),('r','r'), +('m','m'),('b','b'),('x','x'),('g','g'),('p','p'), +('q','q'),('w','w'),('d','d'),('e','e'); +CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1; +SELECT * FROM v1 +WHERE ( a, a ) IN ( +SELECT alias2.b, alias2.a +FROM t1 AS alias1, t1 AS alias2 +WHERE alias2.b = alias1.a +AND ( alias1.b >= alias1.a OR alias2.b = 'z' ) +); +a b +j j +v v +c c +m m +m m +d d +d d +d d +y y +t t +s s +r r +b b +x x +g g +p p +q q +w w +e e +DROP VIEW v1; +DROP TABLE t1; # This must be the last in the file: set optimizer_switch=@subselect_sj2_tmp; # === modified file 'mysql-test/r/subselect_sj2_mat.result' --- a/mysql-test/r/subselect_sj2_mat.result 2012-02-25 00:50:22 +0000 +++ b/mysql-test/r/subselect_sj2_mat.result 2012-03-23 21:39:56 +0000 @@ -905,6 +905,49 @@ 3 1 1 4 1 1 DROP TABLE t1,t2; +# +# BUG#951937: Wrong result (missing rows) with semijoin+materialization, IN subquery, InnoDB, TEMPTABLE view +# +CREATE TABLE t1 ( +a VARCHAR(1), +b VARCHAR(1) NOT NULL, +KEY(a) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES +('j','j'),('v','v'),('c','c'),('m','m'),('d','d'), +('y','y'),('t','t'),('d','d'),('s','s'),('r','r'), +('m','m'),('b','b'),('x','x'),('g','g'),('p','p'), +('q','q'),('w','w'),('d','d'),('e','e'); +CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1; +SELECT * FROM v1 +WHERE ( a, a ) IN ( +SELECT alias2.b, alias2.a +FROM t1 AS alias1, t1 AS alias2 +WHERE alias2.b = alias1.a +AND ( alias1.b >= alias1.a OR alias2.b = 'z' ) +); +a b +j j +v v +c c +m m +m m +d d +d d +d d +y y +t t +s s +r r +b b +x x +g g +p p +q q +w w +e e +DROP VIEW v1; +DROP TABLE t1; # This must be the last in the file: set optimizer_switch=@subselect_sj2_tmp; set optimizer_switch=default; === modified file 'mysql-test/t/subselect_sj2.test' --- a/mysql-test/t/subselect_sj2.test 2012-01-19 19:44:43 +0000 +++ b/mysql-test/t/subselect_sj2.test 2012-03-23 21:39:56 +0000 @@ -1090,5 +1090,32 @@ DROP TABLE t1,t2; +--echo # +--echo # BUG#951937: Wrong result (missing rows) with semijoin+materialization, IN subquery, InnoDB, TEMPTABLE view +--echo # +CREATE TABLE t1 ( + a VARCHAR(1), + b VARCHAR(1) NOT NULL, + KEY(a) +) ENGINE=InnoDB; +INSERT INTO t1 VALUES +('j','j'),('v','v'),('c','c'),('m','m'),('d','d'), +('y','y'),('t','t'),('d','d'),('s','s'),('r','r'), +('m','m'),('b','b'),('x','x'),('g','g'),('p','p'), +('q','q'),('w','w'),('d','d'),('e','e'); + +CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1; + +# This query returns 6 rows instead of 19 + +SELECT * FROM v1 +WHERE ( a, a ) IN ( + SELECT alias2.b, alias2.a + FROM t1 AS alias1, t1 AS alias2 + WHERE alias2.b = alias1.a + AND ( alias1.b >= alias1.a OR alias2.b = 'z' ) +); +DROP VIEW v1; +DROP TABLE t1; --echo # This must be the last in the file: set optimizer_switch=@subselect_sj2_tmp; === modified file 'sql/item_cmpfunc.cc' --- a/sql/item_cmpfunc.cc 2012-02-28 14:41:55 +0000 +++ b/sql/item_cmpfunc.cc 2012-03-23 21:39:56 +0000 @@ -5388,7 +5388,7 @@ */ Item_equal::Item_equal(Item *f1, Item *f2, bool with_const_item) - : Item_bool_func(), eval_item(0), cond_false(0) + : Item_bool_func(), eval_item(0), cond_false(0), context_field(NULL) { const_item_cache= 0; with_const= with_const_item; @@ -5411,7 +5411,7 @@ */ Item_equal::Item_equal(Item_equal *item_equal) - : Item_bool_func(), eval_item(0), cond_false(0) + : Item_bool_func(), eval_item(0), cond_false(0), context_field(NULL) { const_item_cache= 0; List_iterator_fast<Item> li(item_equal->equal_items); === modified file 'sql/item_cmpfunc.h' --- a/sql/item_cmpfunc.h 2012-01-19 22:11:53 +0000 +++ b/sql/item_cmpfunc.h 2012-03-23 21:39:56 +0000 @@ -1700,9 +1700,16 @@ as datetimes. The comparator is used only if compare_as_dates=TRUE */ Arg_comparator cmp; + + /* + For Item_equal objects inside an OR clause: one of the fields that were + used in the original comparison. + */ + Item_field *context_field; public: inline Item_equal() - : Item_bool_func(), with_const(FALSE), eval_item(0), cond_false(0) + : Item_bool_func(), with_const(FALSE), eval_item(0), cond_false(0), + context_field(NULL) { const_item_cache=0 ;} Item_equal(Item *f1, Item *f2, bool with_const_item); Item_equal(Item_equal *item_equal); @@ -1729,6 +1736,8 @@ Item *transform(Item_transformer transformer, uchar *arg); virtual void print(String *str, enum_query_type query_type); CHARSET_INFO *compare_collation(); + + void set_context_field(Item_field *ctx_field) { context_field= ctx_field; } friend class Item_equal_fields_iterator; friend Item *eliminate_item_equal(COND *cond, COND_EQUAL *upper_levels, Item_equal *item_equal); === modified file 'sql/opt_subselect.cc' --- a/sql/opt_subselect.cc 2012-03-18 19:58:20 +0000 +++ b/sql/opt_subselect.cc 2012-03-23 21:39:56 +0000 @@ -171,6 +171,246 @@ */ +/* +EqualityPropagationAndSjmNests +****************************** + +The process of equality propagation has two parts +P1. Equality propagation +P2. Equality substitution [for a certain join order] + +The propagation part is not affected by SJM nests. In fact, it is done before +we determine the execution plan, i.e. before we even know we will use +SJM-nests for execution. + +The substitution part is affected. + +Substitution without SJMs +========================= +When one doesn't have SJM nests, tables have a strict join order: + + ---------------------------------> + t1 -- t2 -- t3 -- t4 --- t5 + + + ? ^ + \ + --(part-of-WHERE) + + +parts WHERE/ON and ref. expressions are attached at some point along the axis. +Expression is allowed to refer to a table column if the table is to the left of +the attachment point. For any given expression, we have a goal: + + "Move leftmost allowed attachment point as much as possible to the left" + +Substitution with SJMs - task setting +===================================== + +When SJM nests are present, there is no global strict table ordering anymore: + + + ---------------------------------> + + ot1 -- ot2 --- sjm -- ot4 --- ot5 + | + | Main execution + - - - - - - - - - - - - - - - - - - - - - - - - + | Materialization + it1 -- it2 --/ + + +Besides that, we must take into account that + - values for outer table columns, otN.col, are inaccessible at + materialization step (SJM-RULE) + - values for inner table columns, itN.col, are inaccessible at Main execution + step, except for SJ-Materialization-Scan and columns that are in the + subquery's select list. (SJM-RULE) + +Substitution with SJMs - solution +================================= + +First, we introduce global strict table ordering like this: + + ot1 - ot2 --\ /--- ot3 -- ot5 + \--- it1 --- it2 --/ + +Now, let's see how to meet (SJM-RULE). + +SJ-Materialization is only applicable for uncorrelated subqueries. From this, it +follows that any multiple equality will either +1. include only columns of outer tables, or +2. include only columns of inner tables, or +3. include columns of inner and outer tables, joined together through one + of IN-equalities. + +Cases #1 and #2 can be handled in the same way as with regular inner joins. + +Case #3 requires special handling, so that we don't construct violations of +(SJM-RULE). Let's consider possible ways to build violations. + +Equality propagation starts with the clause in this form + + top_query_where AND subquery_where AND in_equalities + +First, it builds multi-equalities. It can also build a mixed multi-equality + + multiple-equal(ot1.col, ot2.col, ... it1.col, itN.col) + +Multi-equalities are pushed down the OR-clauses in top_query_where and in +subquery_where, so it's possible that clauses like this one are built: + + subquery_cond OR (multiple-equal(it1.col, ot1.col,...) AND ...) + ^^^^^^^^^^^^^ \ + | this must be evaluated + \- can only be invaluated on the main phase. + on materialization phase + +Finally, equality substitution is started. It does two operations: + + +1. Field reference substitution +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +(In the code, this is Item_field::replace_equal_field) + +This is a process of replacing each reference to "tblX.col" +with the first element of the multi-equality. (REF-SUBST-ORIG) + +This behaviour can cause problems with Semi-join nests. Suppose, we have a +condition: + + func(it1.col, it2.col) + +and a multi-equality(ot1.col, it1.col). Then, reference to "it1.col" will be +replaced with "ot1.col", constructing a condition + + func(ot1.col, it2.col) + +which will be a vioation of (SJM-RULE). + +In order to avoid this, (REF-SUBST-ORIG) is amended as follows: + +- references to tables "itX.col" that are inner wrt some SJM nest, are + replaced with references to the first inner table from the same SJM nest. + +- references to top-level tables "otX.col" are replaced with references to + the first element of the multi-equality, no matter if that first element is + a column of a top-level table or of table from some SJM nest. + (REF-SUBST-SJM) + + The case where the first element is a table from an SJM nest $SJM is ok, + because it can be proven that $SJM uses SJ-Materialization-Scan, and + "unpacks" correct column values to the first element during the main + execution phase. + +2. Item_equal elimination +~~~~~~~~~~~~~~~~~~~~~~~~~ +(In the code: eliminate_item_equal) This is a process of taking + + multiple-equal(a,b,c,d,e) + +and replacing it with an equivalent expression which is an AND of pair-wise +equalities: + + a=b AND a=c AND ... + +The equalities are picked such that for any given join prefix (t1,t2...) the +subset of equalities that can be evaluated gives the most restrictive +filtering. + +Without SJM nests, it is sufficient to compare every multi-equality member +with the first one: + + elem1=elem2 AND elem1=elem3 AND elem1=elem4 ... + +When SJM nests are present, we should take care not to construct equalities +that violate the (SJM-RULE). This is achieved by generating separate sets of +equalites for top-level tables and for inner tables. That is, for the join +order + + ot1 - ot2 --\ /--- ot3 -- ot5 + \--- it1 --- it2 --/ + +we will generate + ot1.col=ot2.col + ot1.col=ot3.col + ot1.col=ot5.col + it2.col=it1.col + + +2.1 The problem with Item_equals and ORs +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +As has been mentioned above, multiple equalities are pushed down into OR +clauses, possibly building clauses like this: + + func(it.col2) OR multiple-equal(it1.col1, it1.col2, ot1.col) (1) + +where the first part of the clause has references to inner tables, while the +second has references to the top-level tables, which is a violation of +(SJM-RULE). + +AND-clauses of this kind do not create problems, because make_cond_for_table() +will take them apart. OR-clauses will not be split. It is possible to +split-out the part that's dependent on the inner table: + + func(it.col2) OR it1.col1=it1.col2 + +but this is a less-restrictive condition than condition (1). Current execution +scheme will still try to generate the "remainder" condition: + + func(it.col2) OR it1.col1=ot1.col + +which is a violation of (SJM-RULE). + +QQ: "ot1.col=it1.col" is checked at the upper level. Why was it not removed +here? +AA: because has a proper subset of conditions that are found on this level. + consider a join order of ot, sjm(it) + and a condition + ot.col=it.col AND ( ot.col=it.col='foo' OR it.col2='bar') + + we will produce: + table ot: nothing + table it: ot.col=it.col AND (ot.col='foo' OR it.col2='bar') + ^^^^ ^^^^^^^^^^^^^^^^ + | \ the problem is that + | this part condition didnt + | receive a substitution + | + +--- it was correct to subst, 'ot' is + the left-most. + + +Is there any merit in pushing inner=outer down into ORs? +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Yes, there is. Consider the query: + + select * from ot + where ot.col in (select it.col from it where (it.col='foo' OR it.col='bar')) + +here, it may be useful to infer that + + (ot.col='foo' OR ot.col='bar') (CASE-FOR-SUBST) + +and attach that condition to the table 'ot'. + +Solution #1 +~~~~~~~~~~~ +Let make_cond_for_table() chop off the bad parts of produced OR clause. If it +has produced an OR clause: +- check if all of its branches are evaluable for the context join_tab +- If some aren't, destroy the OR clause + +Solution #2 +~~~~~~~~~~~ +Before the equality propagation phase, none of the OR clauses violate the +(SJM-RULE). This way, if we remember which tables the original equality +referred to, we can only generate equalities that refer to outer or inner +tables. Note that this will disallow handling of cases like (CASE-FOR-SUBST). +*/ + static bool subquery_types_allow_materialization(Item_in_subselect *in_subs); === modified file 'sql/sql_select.cc' --- a/sql/sql_select.cc 2012-03-13 20:49:18 +0000 +++ b/sql/sql_select.cc 2012-03-23 21:39:56 +0000 @@ -10666,6 +10666,9 @@ acceptable, as this happens rarely. The implementation without copying would be much more complicated. + For description of how equality propagation works with SJM nests, grep + for EqualityPropagationAndSjmNests. + @param left_item left term of the quality to be checked @param right_item right term of the equality to be checked @param item equality item if the equality originates from a condition @@ -10739,12 +10742,14 @@ { /* left_item_equal of an upper level contains left_item */ left_item_equal= new Item_equal(left_item_equal); + left_item_equal->set_context_field(((Item_field*) left_item)); cond_equal->current_level.push_back(left_item_equal); } if (right_copyfl) { /* right_item_equal of an upper level contains right_item */ right_item_equal= new Item_equal(right_item_equal); + right_item_equal->set_context_field(((Item_field*) right_item)); cond_equal->current_level.push_back(right_item_equal); } @@ -10830,6 +10835,7 @@ { item_equal= new Item_equal(item_equal); cond_equal->current_level.push_back(item_equal); + item_equal->set_context_field(field_item); } if (item_equal) { @@ -11480,6 +11486,8 @@ Item_equal::get_first() also takes similar measures for dealing with equality substitution in presense of SJM nests. + Grep for EqualityPropagationAndSjmNests for a more verbose description. + @return - The condition with generated simple equalities or a pointer to the simple generated equality, if success. @@ -11543,9 +11551,13 @@ on upper AND-levels. */ if (upper) - { + { + TABLE_LIST *native_sjm= embedding_sjm(item_equal->context_field); if (item_const && upper->get_const()) + { + /* Upper item also has "field_item=const". Don't produce equality here */ item= 0; + } else { Item_equal_fields_iterator li(*item_equal); @@ -11556,6 +11568,8 @@ break; } } + if (embedding_sjm(field_item) != native_sjm) + item= NULL; /* Don't produce equality */ } bool produce_equality= test(item == field_item); _______________________________________________ commits mailing list commits(a)mariadb.org https://lists.askmonty.org/cgi-bin/mailman/listinfo/commits ----- End forwarded message ----- -- BR Sergei -- Sergei Petrunia, Software Developer Monty Program AB, http://askmonty.org Blog: http://s.petrunia.net/blog

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[Maria-developers] Autolinks to JIRA from the KB
by Daniel Bartholomew 21 Mar '12

21 Mar '12

All, I've created some autolinks for referring to JIRA tasks in the AskMonty Knowledgebase. I've documented how to use them on the "JIRA - project planning and tracking" page, but I wanted to make everyone here aware of them. http://kb.askmonty.org/en/jira-project-planning-and-tracking Basically, when you use mdev-xxx or todo-xxx (where xxx is the mdev or todo number) in a Knowledgebase article, the text will automatically be turned into a link to the task in JIRA. No need to copy the full url and paste it into the KB. Thanks. -- Daniel Bartholomew MariaDB - http://mariadb.org Monty Program - http://montyprogram.com AskMonty Knowledgebase - http://kb.askmonty.org

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[Maria-developers] Need to lock temporary tables?
by webmonkeys＠alibi.com 20 Mar '12

20 Mar '12

>Description: InnoDB: Error: row_search_for_mysql() is called without ha_innobase::external_lock() >How-To-Repeat: create table foo ( data int ); create temporary table tmp_foo (select * from foo limit 0); insert into tmp_foo (data) values (1); lock tables foo write; # add ", tmp_foo read" to the above, to avoid the error. #"LOCK TABLES is permitted (but ignored) for a TEMPORARY table." # -- http://dev.mysql.com/doc/refman/5.0/en/lock-tables.html delete from foo; # The next statement causes # InnoDB: Error: row_search_for_mysql() is called without ha_innobase::external_lock() insert into foo (select * from tmp_foo); unlock tables; drop table tmp_foo; drop table foo; >Fix: Lock the temporary table, though mysql docs say you shouldn't have to. >Submitter-Id: <submitter ID> >Originator: >Organization: >MySQL support: [none | licence | email support | extended email support ] >Synopsis: temporary table wants a lock >Severity: non-critical >Priority: low >Category: mysql >Class: >Release: mysql-5.3.5-MariaDB-ga-mariadb113~squeeze ((MariaDB - http://mariadb.com/)) >C compiler: gcc-4.4.real (Debian 4.4.5-8) 4.4.5 >C++ compiler: g++-4.4.real (Debian 4.4.5-8) 4.4.5 >Environment: System: Linux machibashiri 2.6.32-5-amd64 #1 SMP Mon Mar 7 21:35:22 UTC 2011 x86_64 GNU/Linux Some paths: /usr/bin/perl /usr/bin/make /usr/bin/gcc /usr/bin/cc GCC: Using built-in specs. Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 4.4.5-8' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.4 --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --with-arch-32=i586 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.4.5 (Debian 4.4.5-8) Compilation info (call): CC='gcc -static-libgcc' CFLAGS='-O2 -fno-omit-frame-pointer -g -pipe -Wall -Wno-uninitialized' CXX='g++ -static-libgcc' CXXFLAGS='-O2 -fno-omit-frame-pointer -g -pipe -Wall -Wno-uninitialized' LDFLAGS='' ASFLAGS='' Compilation info (used): CC='gcc -static-libgcc' CFLAGS=' -O2 -fno-omit-frame-pointer -g -pipe -Wall -Wno-uninitialized -DUNIV_LINUX -DUNIV_LINUX' CXX='g++ -static-libgcc' CXXFLAGS=' -O2 -fno-omit-frame-pointer -g -pipe -Wall -Wno-uninitialized -fno-implicit-templates -fno-exceptions -fno-rtti' LDFLAGS=' -rdynamic ' ASFLAGS='' LIBC: lrwxrwxrwx 1 root root 14 Apr 13 2011 /lib/libc.so.6 -> libc-2.11.2.so -rwxr-xr-x 1 root root 1432968 Jan 23 2011 /lib/libc-2.11.2.so -rw-r--r-- 1 root root 4433334 Jan 23 2011 /usr/lib/libc.a -rw-r--r-- 1 root root 247 Jan 23 2011 /usr/lib/libc.so Configure command: ../configure '--build=x86_64-linux-gnu' '--host=x86_64-linux-gnu' '--prefix=/usr' '--exec-prefix=/usr' '--libexecdir=/usr/sbin' '--datadir=/usr/share' '--localstatedir=/var/lib/mysql' '--includedir=/usr/include' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-server-suffix=-mariadb113~squeeze' '--with-comment=(MariaDB - http://mariadb.com/)' '--with-system-type=debian-linux-gnu' '--enable-shared' '--enable-static' '--enable-thread-safe-client' '--enable-assembler' '--enable-local-infile' '--with-pstack' '--with-fast-mutexes' '--with-unix-socket-path=/var/run/mysqld/mysqld.sock' '--with-mysqld-user=mysql' '--with-big-tables' '--without-docs' '--with-extra-charsets=all' '--with-libwrap' '--with-ssl=/usr' '--with-libevent' '--without-readline' '--with-zlib-dir=' '--with-embedded-server' '--with-embedded-privilege-control' '--with-plugins=max-no-ndb' 'build_alias=x86_64-linux-gnu' 'host_alias=x86_64-linux-gnu' 'CC=gcc -static-libgcc' 'CFLAGS=-O2! -fno-omit-frame-pointer -g -pipe -Wall -Wno-uninitialized' 'LDFLAGS=' 'CPPFLAGS=' 'CXX=g++ -static-libgcc' 'CXXFLAGS=-O2 -fno-omit-frame-pointer -g -pipe -Wall -Wno-uninitialized'

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[Maria-developers] New KB Question: mariadb compilation flags
by Daniel Bartholomew 19 Mar '12

19 Mar '12

A new question has been posted to the Knowledgebase: http://kb.askmonty.org/en/mariadb-compilation-flags ---------------------------------------------------------------------- how come mariadb is compiled on linux 64 bit with -O2 rather than -O3? mysql is compiled with -O3. does it make any difference? thanks! ---------------------------------------------------------------------- Thanks. -- Daniel Bartholomew MariaDB - http://mariadb.org Monty Program - http://montyprogram.com AskMonty Knowledgebase - http://kb.askmonty.org

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[Maria-developers] MariaDB 5.5.21
by Daniel Bartholomew 15 Mar '12

15 Mar '12

All, I've uploaded the MariaDB 5.5.21-beta packages to the primary mirror and within a few hours the files will be distributed to all of the mirrors. Over the past couple of weeks I've added several items to the release notes page for 5.5.21 and today I created the changelog page. The pages are here: http://kb.askmonty.org/en/mariadb-5521-release-notes http://kb.askmonty.org/en/mariadb-5521-changelog Once the files are distributed I will update the pages and add in the download links and remove the "unreleased" banners from the pages linked to from the release notes page. I will also send out an announcement email, and post announcements to twitter, FB, G+, and so on as usual. Please let me know ASAP if there is anything which is not on the release notes page which should be (or jump in and add it). Thanks. -- Daniel Bartholomew MariaDB - http://mariadb.org Monty Program - http://montyprogram.com AskMonty Knowledgebase - http://kb.askmonty.org

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Re: [Maria-developers] mariadb 5.3.5 build on OpenBSD 5.0
by Sergei 15 Mar '12

15 Mar '12

Hi! On Mar 14, U Orsini wrote: > I know this isn't a good way of submitting reports, but I really don't > want to join mailing lists and teams just for this. Hope you can still > use this information. Some of it likely affects other *BSDs too. A good way of submitting bug reports is bugs.launchpad.net/maria You don't need to join a team to use it. I've submitted a bug report on your behalf: https://bugs.launchpad.net/maria/+bug/955760 Regards, Sergei

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Re: [Maria-developers] [Commits] Rev 3329: MDEV-15 Log SQL errors. in file:///home/hf/wmar/mdev15/
by Sergei Golubchik 14 Mar '12

14 Mar '12

Hi, Holyfoot! On Mar 14, holyfoot(a)askmonty.org wrote: > revno: 3329 > revision-id: holyfoot(a)askmonty.org-20120314123749-5kdm2u6qxrd1wtae > parent: holyfoot(a)askmonty.org-20120314054054-64q35vr6254t2ja6 > committer: Alexey Botchkov <holyfoot(a)askmonty.org> > branch nick: mdev15 > timestamp: Wed 2012-03-14 16:37:49 +0400 > message: > MDEV-15 Log SQL errors. > mysys/my_logger.c was moved to sql/sql_logger.c > Logger service was rewritten with file functions instead of stream, so it > can handle huge files. Ok for me Regards, Sergei

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Re: [Maria-developers] MDEV-15 Log all SQL errors. in file:///home/hf/wmar/mdev15/
by Sergei Golubchik 14 Mar '12

14 Mar '12

Hi, Holyfoot! Just two comments, see below. Please fix and push ASAP! On Mar 13, holyfoot(a)askmonty.org wrote: > > ------------------------------------------------------------ > revno: 3320 > revision-id: holyfoot(a)askmonty.org-20120313160142-ljcsacc11zb34uu6 > parent: sergii(a)pisem.net-20120309082045-iyihz9ysqo82qb71 > committer: Alexey Botchkov <holyfoot(a)askmonty.org> > branch nick: mdev15 > timestamp: Tue 2012-03-13 20:01:42 +0400 > message: > MDEV-15 Log all SQL errors. > The logger service added to provide the rotating log functions. > The SQL_ERROR_LOG plugin created to log the SQL errors usint that logger service. > === added file 'include/mysql/service_logger.h' > --- a/include/mysql/service_logger.h 1970-01-01 00:00:00 +0000 > +++ b/include/mysql/service_logger.h 2012-03-13 16:01:42 +0000 > + > +typedef struct logger_service_file_st LOGGER_SERVICE_FILE; small comment: please, rename to LOGGER_HANDLE or LOGGER_DESCRIPTOR, or, say, MYSQL_LOGGER. The point is to avoid the word "FILE", because, in principle, it may log to syslog or to a table or whatever. (and better to avoid SERVICE too, because 1) this structure is not a service, it's a handle, 2) services are supposed to be transparent and invisible, they pretend to be regular function calls) > +maria_declare_plugin(sql_errlog) > +{ > + MYSQL_AUDIT_PLUGIN, > + &descriptor, > + "SQL_ERROR_LOG", > + "Alexey Botchkov", > + "Log SQL level errors to a file with rotation", > + PLUGIN_LICENSE_GPL, > + sql_error_log_init, > + sql_error_log_deinit, > + 0x0100, > + NULL, > + vars, > + NULL, > + 0 Fix this, please. Two last values are - version (as a string), and maturity. For example, "1.0", MariaDB_PLUGIN_MATURITY_ALPHA > +} > +maria_declare_plugin_end; Regards, Sergei

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