I see intermittent failure for some nodes to join cluster (see below):

2016-11-01 17:24:22 140050125105920 [Warning] WSREP: Failed to prepare for incremental state transfer: Local state UUID (00000000-0000-0000-0000-000000000000) does not match group state UUID (fdb9a4a3-a056-11e6-a01d-5a15e8d77e80): 1 (Operation not permitted)
at galera/src/replicator_str.cpp:prepare_for_IST():482. IST will be unavailable.
2016-11-01 17:24:22 140049819625216 [Note] WSREP: Member 1.0 () requested state transfer from '*any*'. Selected 0.0 ()(SYNCED) as donor.
2016-11-01 17:24:22 140049819625216 [Note] WSREP: Shifting PRIMARY -> JOINER (TO: 4)
2016-11-01 17:24:22 140050125105920 [Note] WSREP: Requesting state transfer: success, donor: 0
2016-11-01 17:24:24 140049819625216 [Warning] WSREP: 0.0 (): State transfer to 1.0 () failed: -255 (Unknown error 255)
2016-11-01 17:24:24 140049819625216 [ERROR] WSREP: gcs/src/gcs_group.cpp:gcs_group_handle_join_msg():733: Will never receive state. Need to abort.

Any idea what the cause can be and how to deal with it?

Thank you,