IST hangs when keyring_file_data is set

Bug #1728688 reported by Lukasz Kawczynski on 2017-10-30
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Percona XtraDB Cluster moved to https://jira.percona.com/projects/PXC
Fix Committed
Undecided
Unassigned

Bug Description

Hi,

I'm trying to enable InnoDB table space encryption in my Galera cluster (running 5.7.19-29.22-3.jessie, xtrabackup 2.4.8-1.jessie), however I cannot get IST to work. I bootstrapped a test cluster with pxc_encrypt_cluster_traffic set to ON (since encryption is mandatory for the keyring transfer). My test looks like this:

1. Stop one of the nodes
2. Issue a few inserts to one of the remaining nodes
3. Start the node back and wait for IST to finish

Step 3 hangs indefinitely (or more specifically, the init script hangs and I cannot connect to MySQL). I haven't enabled encryption on any of the tables yet. It seems the issue is caused just by setting the keyring_file_data option in my.cnf.

From the logs it seems that IST completes but is not signalled to the joiner correctly.

Logs from the joiner:

2017-10-30T18:31:16.518484Z mysqld_safe Logging to '/var/lib/mysql/dbtest2.err'.
2017-10-30T18:31:16.533008Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
2017-10-30T18:31:16.538314Z mysqld_safe Skipping wsrep-recover for 590fa85c-bd85-11e7-9d42-468b04ff29c5:34 pair
2017-10-30T18:31:16.539029Z mysqld_safe Assigning 590fa85c-bd85-11e7-9d42-468b04ff29c5:34 to wsrep_start_position
2017-10-30T18:31:16.544596Z 0 [Warning] Changed limits: max_open_files: 5000 (requested 5011)
2017-10-30T18:31:16.544649Z 0 [Warning] Changed limits: table_open_cache: 1995 (requested 2000)
2017-10-30T18:31:16.719955Z 0 [Warning] The syntax '--log_warnings/-W' is deprecated and will be removed in a future release. Please use '--log_error_verbosity' instead.
2017-10-30T18:31:16.720063Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2017-10-30T18:31:16.721390Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.19-17-57) starting as process 29487 ...
2017-10-30T18:31:16.723807Z 0 [Note] Found ca.pem, server-cert.pem and server-key.pem in data directory. Trying to enable SSL support using them.
2017-10-30T18:31:16.723826Z 0 [Note] WSREP: Skipping automatic SSL certificate generation (enabled only in bootstrap mode)
2017-10-30T18:31:16.723839Z 0 [Note] WSREP: Setting wsrep_ready to false
2017-10-30T18:31:16.723850Z 0 [Note] WSREP: No pre-stored wsrep-start position found. Skipping position initialization.
2017-10-30T18:31:16.723856Z 0 [Note] WSREP: wsrep_load(): loading provider library '/usr/lib/libgalera_smm.so'
2017-10-30T18:31:16.727674Z 0 [Note] WSREP: wsrep_load(): Galera 3.22(r8678538) by Codership Oy <email address hidden> loaded successfully.
2017-10-30T18:31:16.727752Z 0 [Note] WSREP: CRC-32C: using hardware acceleration.
2017-10-30T18:31:16.728629Z 0 [Note] WSREP: Found saved state: 590fa85c-bd85-11e7-9d42-468b04ff29c5:34, safe_to_bootsrap: 0
2017-10-30T18:31:16.729820Z 0 [Note] WSREP: Passing config to GCS: base_dir = /var/lib/mysql/; base_host = 10.10.10.28; base_port = 4567; cert.log_conflicts = no; debug = no; evs.auto_evict = 0; evs.delay_margin = PT1S; evs.delayed_keep_period = PT30S; evs.inactive_check_period = PT0.5S; evs.inactive_timeout = PT15S; evs.join_retrans_period = PT1S; evs.max_install_timeouts = 3; evs.send_window = 10; evs.stats_report_period = PT1M; evs.suspect_timeout = PT5S; evs.user_send_window = 4; evs.view_forget_timeout = PT24H; gcache.dir = /var/lib/mysql/; gcache.keep_pages_count = 0; gcache.keep_pages_size = 0; gcache.mem_size = 0; gcache.name = /var/lib/mysql//galera.cache; gcache.page_size = 128M; gcache.recover = no; gcache.size = 1G; gcomm.thread_prio = ; gcs.fc_debug = 0; gcs.fc_factor = 1; gcs.fc_limit = 100; gcs.fc_master_slave = no; gcs.max_packet_size = 64500; gcs.max_throttle = 0.25; gcs.recv_q_hard_limit = 9223372036854775807; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor = no; gmcast.listen_addr = tcp://10.10.10.28:4567; gmcast.segment = 0; gmcast.version = 0; pc.announce_timeout = PT3S; pc.checksum = false; pc.ignore_quorum = false; pc.ignore_sb = false; pc.npvo = false; pc.recovery = 1; pc.version = 0; pc.wait_prim = true; pc.wait_prim_timeout = PT30S; pc.weight = 1; protonet.backend = asio; protonet.version = 0; repl.causal_read_timeout = PT30S; repl.commit_order = 3; repl.key_format = FLAT8; repl.max_ws_size = 2147483647; repl.proto_max = 7; socket.checksum = 2; socket.recv_buf_size = 212992; socket.ssl_ca = ca.pem; socket.ssl_cert = server-cert.pem; socket.ssl_cipher = AES128-SHA; socket.ssl_compression = YES; socket.ssl_key = server-key.pem;
2017-10-30T18:31:16.745742Z 0 [Note] WSREP: GCache history reset: 590fa85c-bd85-11e7-9d42-468b04ff29c5:0 -> 590fa85c-bd85-11e7-9d42-468b04ff29c5:34
2017-10-30T18:31:16.746255Z 0 [Note] WSREP: Assign initial position for certification: 34, protocol version: -1
2017-10-30T18:31:16.746278Z 0 [Note] WSREP: Preparing to initiate SST/IST
2017-10-30T18:31:16.746285Z 0 [Note] WSREP: Starting replication
2017-10-30T18:31:16.746298Z 0 [Note] WSREP: Setting initial position to 590fa85c-bd85-11e7-9d42-468b04ff29c5:34
2017-10-30T18:31:16.746539Z 0 [Note] WSREP: Using CRC-32C for message checksums.
2017-10-30T18:31:16.746580Z 0 [Note] WSREP: initializing ssl context
2017-10-30T18:31:16.746912Z 0 [Note] WSREP: gcomm thread scheduling priority set to other:0
2017-10-30T18:31:16.747023Z 0 [Warning] WSREP: Fail to access the file (/var/lib/mysql//gvwstate.dat) error (No such file or directory). It is possible if node is booting for first time or re-booting after a graceful shutdown
2017-10-30T18:31:16.747041Z 0 [Note] WSREP: Restoring primary-component from disk failed. Either node is booting for first time or re-booting after a graceful shutdown
2017-10-30T18:31:16.747586Z 0 [Note] WSREP: GMCast version 0
2017-10-30T18:31:16.747866Z 0 [Note] WSREP: (8424307c, 'ssl://10.10.10.28:4567') listening at ssl://10.10.10.28:4567
2017-10-30T18:31:16.747885Z 0 [Note] WSREP: (8424307c, 'ssl://10.10.10.28:4567') multicast: , ttl: 1
2017-10-30T18:31:16.748276Z 0 [Note] WSREP: EVS version 0
2017-10-30T18:31:16.748397Z 0 [Note] WSREP: gcomm: connecting to group 'test', peer '10.10.10.29:,10.10.10.28:,10.10.10.27:'
2017-10-30T18:31:16.757084Z 0 [Note] WSREP: SSL handshake successful, remote endpoint ssl://10.10.10.27:4567 local endpoint ssl://10.10.10.28:59971 cipher: AES128-SHA compression:
2017-10-30T18:31:16.758336Z 0 [Note] WSREP: (8424307c, 'ssl://10.10.10.28:4567') connection established to c3f5b6b3 ssl://10.10.10.27:4567
2017-10-30T18:31:16.758448Z 0 [Note] WSREP: (8424307c, 'ssl://10.10.10.28:4567') turning message relay requesting on, nonlive peers:
2017-10-30T18:31:16.759279Z 0 [Note] WSREP: SSL handshake successful, remote endpoint ssl://10.10.10.29:4567 local endpoint ssl://10.10.10.28:44410 cipher: AES128-SHA compression:
2017-10-30T18:31:16.760789Z 0 [Note] WSREP: (8424307c, 'ssl://10.10.10.28:4567') connection established to 8c6853ae ssl://10.10.10.29:4567
2017-10-30T18:31:16.814652Z 0 [Note] WSREP: declaring 8c6853ae at ssl://10.10.10.29:4567 stable
2017-10-30T18:31:16.814704Z 0 [Note] WSREP: declaring c3f5b6b3 at ssl://10.10.10.27:4567 stable
2017-10-30T18:31:16.815721Z 0 [Note] WSREP: Node 8c6853ae state primary
2017-10-30T18:31:16.816976Z 0 [Note] WSREP: Current view of cluster as seen by this node
view (view_id(PRIM,8424307c,93)
memb {
 8424307c,0
 8c6853ae,0
 c3f5b6b3,0
 }
joined {
 }
left {
 }
partitioned {
 }
)
2017-10-30T18:31:16.817000Z 0 [Note] WSREP: Save the discovered primary-component to disk
2017-10-30T18:31:17.249018Z 0 [Note] WSREP: gcomm: connected
2017-10-30T18:31:17.249175Z 0 [Note] WSREP: Shifting CLOSED -> OPEN (TO: 0)
2017-10-30T18:31:17.249293Z 0 [Note] WSREP: Waiting for SST/IST to complete.
2017-10-30T18:31:17.249411Z 0 [Note] WSREP: New COMPONENT: primary = yes, bootstrap = no, my_idx = 0, memb_num = 3
2017-10-30T18:31:17.249949Z 0 [Note] WSREP: STATE_EXCHANGE: sent state UUID: 8470d981-bda0-11e7-b889-431946194c48
2017-10-30T18:31:17.251543Z 0 [Note] WSREP: STATE EXCHANGE: sent state msg: 8470d981-bda0-11e7-b889-431946194c48
2017-10-30T18:31:17.252341Z 0 [Note] WSREP: STATE EXCHANGE: got state msg: 8470d981-bda0-11e7-b889-431946194c48 from 0 (dbtest2)
2017-10-30T18:31:17.252405Z 0 [Note] WSREP: STATE EXCHANGE: got state msg: 8470d981-bda0-11e7-b889-431946194c48 from 1 (dbtest1)
2017-10-30T18:31:17.252453Z 0 [Note] WSREP: STATE EXCHANGE: got state msg: 8470d981-bda0-11e7-b889-431946194c48 from 2 (dbtest3)
2017-10-30T18:31:17.252499Z 0 [Note] WSREP: Quorum results:
 version = 4,
 component = PRIMARY,
 conf_id = 85,
 members = 2/3 (primary/total),
 act_id = 37,
 last_appl. = -1,
 protocols = 0/7/3 (gcs/repl/appl),
 group UUID = 590fa85c-bd85-11e7-9d42-468b04ff29c5
2017-10-30T18:31:17.252551Z 0 [Note] WSREP: Flow-control interval: [173, 173]
2017-10-30T18:31:17.252589Z 0 [Note] WSREP: Trying to continue unpaused monitor
2017-10-30T18:31:17.252625Z 0 [Note] WSREP: Shifting OPEN -> PRIMARY (TO: 37)
2017-10-30T18:31:17.252723Z 2 [Note] WSREP: State transfer required:
 Group state: 590fa85c-bd85-11e7-9d42-468b04ff29c5:37
 Local state: 590fa85c-bd85-11e7-9d42-468b04ff29c5:34
2017-10-30T18:31:17.252769Z 2 [Note] WSREP: New cluster view: global state: 590fa85c-bd85-11e7-9d42-468b04ff29c5:37, view# 86: Primary, number of nodes: 3, my index: 0, protocol version 3
2017-10-30T18:31:17.252779Z 2 [Note] WSREP: Setting wsrep_ready to true
2017-10-30T18:31:17.252784Z 2 [Warning] WSREP: Gap in state sequence. Need state transfer.
2017-10-30T18:31:17.252792Z 2 [Note] WSREP: Setting wsrep_ready to false
2017-10-30T18:31:17.252860Z 0 [Note] WSREP: Initiating SST/IST transfer on JOINER side (wsrep_sst_xtrabackup-v2 --role 'joiner' --address '10.10.10.28' --datadir '/var/lib/mysql/' --defaults-file '/etc/mysql/my.cnf' --defaults-group-suffix '' --parent '29487' '' )
2017-10-30T18:31:17.749475Z 2 [Note] WSREP: Prepared SST/IST request: xtrabackup-v2|10.10.10.28:4444/xtrabackup_sst//1
2017-10-30T18:31:17.749516Z 2 [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification.
2017-10-30T18:31:17.749551Z 2 [Note] WSREP: REPL Protocols: 7 (3, 2)
2017-10-30T18:31:17.749565Z 2 [Note] WSREP: Assign initial position for certification: 37, protocol version: 3
2017-10-30T18:31:17.749614Z 0 [Note] WSREP: Service thread queue flushed.
2017-10-30T18:31:17.749693Z 2 [Note] WSREP: Check if state gap can be serviced using IST
2017-10-30T18:31:17.749832Z 2 [Note] WSREP: IST receiver addr using ssl://10.10.10.28:4568
2017-10-30T18:31:17.749917Z 2 [Note] WSREP: IST receiver using ssl
2017-10-30T18:31:17.750261Z 2 [Note] WSREP: Prepared IST receiver, listening at: ssl://10.10.10.28:4568
2017-10-30T18:31:17.750282Z 2 [Note] WSREP: State gap can be likely serviced using IST. SST request though present would be void.
2017-10-30T18:31:17.753470Z 0 [Note] WSREP: Member 0.0 (dbtest2) requested state transfer from '*any*'. Selected 1.0 (dbtest1)(SYNCED) as donor.
2017-10-30T18:31:17.753488Z 0 [Note] WSREP: Shifting PRIMARY -> JOINER (TO: 37)
2017-10-30T18:31:17.753517Z 2 [Note] WSREP: Requesting state transfer: success, donor: 1
2017-10-30T18:31:17.753538Z 2 [Note] WSREP: GCache history reset: 590fa85c-bd85-11e7-9d42-468b04ff29c5:0 -> 590fa85c-bd85-11e7-9d42-468b04ff29c5:37
2017-10-30T18:31:18.176789Z 0 [Note] WSREP: 1.0 (dbtest1): State transfer to 0.0 (dbtest2) complete.
2017-10-30T18:31:18.177862Z 0 [Note] WSREP: Member 1.0 (dbtest1) synced with group.
2017-10-30T18:31:20.249577Z 0 [Note] WSREP: (8424307c, 'ssl://10.10.10.28:4567') turning message relay requesting off

Logs from the donor:

2017-10-30T18:31:15.172649Z 0 [Note] WSREP: SSL handshake successful, remote endpoint ssl://10.10.10.28:44410 local endpoint ssl://10.10.10.29:4567 cipher: AES128-SHA compression:
2017-10-30T18:31:15.173403Z 0 [Note] WSREP: (8c6853ae, 'ssl://10.10.10.29:4567') turning message relay requesting on, nonlive peers: ssl://10.10.10.28:4567
2017-10-30T18:31:15.173947Z 0 [Note] WSREP: (8c6853ae, 'ssl://10.10.10.29:4567') connection established to 8424307c ssl://10.10.10.28:4567
2017-10-30T18:31:15.228234Z 0 [Note] WSREP: declaring 8424307c at ssl://10.10.10.28:4567 stable
2017-10-30T18:31:15.228394Z 0 [Note] WSREP: declaring c3f5b6b3 at ssl://10.10.10.27:4567 stable
2017-10-30T18:31:15.229234Z 0 [Note] WSREP: Node 8c6853ae state primary
2017-10-30T18:31:15.230553Z 0 [Note] WSREP: Current view of cluster as seen by this node
view (view_id(PRIM,8424307c,93)
memb {
    8424307c,0
    8c6853ae,0
    c3f5b6b3,0
    }
joined {
    }
left {
    }
partitioned {
    }
)
2017-10-30T18:31:15.230645Z 0 [Note] WSREP: Save the discovered primary-component to disk
2017-10-30T18:31:15.231098Z 0 [Note] WSREP: New COMPONENT: primary = yes, bootstrap = no, my_idx = 1, memb_num = 3
2017-10-30T18:31:15.231129Z 0 [Note] WSREP: STATE EXCHANGE: Waiting for state UUID.
2017-10-30T18:31:15.665160Z 0 [Note] WSREP: STATE EXCHANGE: sent state msg: 8470d981-bda0-11e7-b889-431946194c48
2017-10-30T18:31:15.665970Z 0 [Note] WSREP: STATE EXCHANGE: got state msg: 8470d981-bda0-11e7-b889-431946194c48 from 0 (dbtest2)
2017-10-30T18:31:15.666093Z 0 [Note] WSREP: STATE EXCHANGE: got state msg: 8470d981-bda0-11e7-b889-431946194c48 from 1 (dbtest1)
2017-10-30T18:31:15.666185Z 0 [Note] WSREP: STATE EXCHANGE: got state msg: 8470d981-bda0-11e7-b889-431946194c48 from 2 (dbtest3)
2017-10-30T18:31:15.666211Z 0 [Note] WSREP: Quorum results:
    version = 4,
    component = PRIMARY,
    conf_id = 85,
    members = 2/3 (primary/total),
    act_id = 37,
    last_appl. = 0,
    protocols = 0/7/3 (gcs/repl/appl),
    group UUID = 590fa85c-bd85-11e7-9d42-468b04ff29c5
2017-10-30T18:31:15.666229Z 0 [Note] WSREP: Flow-control interval: [173, 173]
2017-10-30T18:31:15.666240Z 0 [Note] WSREP: Trying to continue unpaused monitor
2017-10-30T18:31:15.666332Z 1 [Note] WSREP: New cluster view: global state: 590fa85c-bd85-11e7-9d42-468b04ff29c5:37, view# 86: Primary, number of nodes: 3, my index: 1, protocol version 3
2017-10-30T18:31:15.666346Z 1 [Note] WSREP: Setting wsrep_ready to true
2017-10-30T18:31:15.666356Z 1 [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification.
2017-10-30T18:31:15.666384Z 1 [Note] WSREP: REPL Protocols: 7 (3, 2)
2017-10-30T18:31:15.666415Z 1 [Note] WSREP: Assign initial position for certification: 37, protocol version: 3
2017-10-30T18:31:15.666462Z 0 [Note] WSREP: Service thread queue flushed.
2017-10-30T18:31:16.167004Z 0 [Note] WSREP: Member 0.0 (dbtest2) requested state transfer from '*any*'. Selected 1.0 (dbtest1)(SYNCED) as donor.
2017-10-30T18:31:16.167055Z 0 [Note] WSREP: Shifting SYNCED -> DONOR/DESYNCED (TO: 37)
2017-10-30T18:31:16.167280Z 1 [Note] WSREP: IST request: 590fa85c-bd85-11e7-9d42-468b04ff29c5:34-37|ssl://10.10.10.28:4568
2017-10-30T18:31:16.167316Z 1 [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification.
2017-10-30T18:31:16.167447Z 0 [Note] WSREP: Initiating SST/IST transfer on DONOR side (wsrep_sst_xtrabackup-v2 --role 'donor' --address '10.10.10.28:4444/xtrabackup_sst//1' --socket '/var/run/mysqld/mysqld.sock' --datadir '/var/lib/mysql/' --defaults-file '/etc/mysql/my.cnf' --defaults-group-suffix '' '' --gtid '590fa85c-bd85-11e7-9d42-468b04ff29c5:34' --bypass)
2017-10-30T18:31:16.168551Z 1 [Note] WSREP: DONOR thread signaled with 0
2017-10-30T18:31:16.168798Z 1 [Note] WSREP: IST sender using ssl
2017-10-30T18:31:16.178384Z 0 [Note] WSREP: async IST sender starting to serve ssl://10.10.10.28:4568 sending 35-37
    2017-10-30T18:31:16.503316Z WSREP_SST: [INFO] Bypassing SST. Can work it through IST
2017-10-30T18:31:16.590367Z 0 [Note] WSREP: 1.0 (dbtest1): State transfer to 0.0 (dbtest2) complete.
2017-10-30T18:31:16.590401Z 0 [Note] WSREP: Shifting DONOR/DESYNCED -> JOINED (TO: 37)
2017-10-30T18:31:16.591402Z 0 [Note] WSREP: Member 1.0 (dbtest1) synced with group.
2017-10-30T18:31:16.591416Z 0 [Note] WSREP: Shifting JOINED -> SYNCED (TO: 37)
2017-10-30T18:31:16.591450Z 5 [Note] WSREP: Synchronized with group, ready for connections
2017-10-30T18:31:16.591503Z 5 [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification.
2017-10-30T18:31:18.256069Z 0 [Note] WSREP: (8c6853ae, 'ssl://10.10.10.29:4567') turning message relay requesting off

Config:

[client]
default_character_set = utf8
port = 3306
socket = /var/run/mysqld/mysqld.sock

[mysqld]
audit_log_file = /var/log/mysql/audit.log
audit_log_format = JSON
audit_log_handler = FILE
audit_log_rotate_on_size = 4G
audit_log_rotations = 1
bind_address = 10.10.10.29
binlog_format = row
datadir = /var/lib/mysql
default_storage_engine = innodb
innodb_autoinc_lock_mode = 2
innodb_buffer_pool_size = 512M
innodb_file_per_table = 1
innodb_locks_unsafe_for_binlog = 1
innodb_log_file_size = 64M
log_warnings = 2
max_connections = 1000
pid_file = /var/run/mysqld/mysqld.pid
plugin-load = audit_log=audit_log.so
port = 3306
server_id = 1
socket = /var/run/mysqld/mysqld.sock
sql_mode = traditional
user = mysql
wsrep_cluster_address = gcomm://10.10.10.29,10.10.10.28,10.10.10.27
wsrep_cluster_name = test
wsrep_node_address = 10.10.10.29
wsrep_provider = /usr/lib/libgalera_smm.so
wsrep_provider_options = "gcache.size = 1G; gmcast.listen_addr = tcp://10.10.10.29:4567"
wsrep_slave_threads = 4
wsrep_sst_auth = sst:password
wsrep_sst_method = xtrabackup-v2
pxc_encrypt_cluster_traffic = ON
early-plugin-load = keyring_file.so
keyring_file_data = /var/lib/mysql-keyring/keyring

Changed in percona-xtradb-cluster:
status: New → Triaged
Krunal Bauskar (krunal-bauskar) wrote :

commit b496ae4af8634dc38323754a3119b7defc6d5302
Merge: cfea40e 58eb07b
Author: Krunal Bauskar <email address hidden>
Date: Wed Nov 1 15:33:35 2017 +0530

    Merge pull request #567 from kbauskar/5.7-pxc-885

    - PXC#885: IST hangs when keyring_file_data is set

commit 58eb07b9cb62e679e5503a19e29d9af0b1593c64
Author: Krunal Bauskar <email address hidden>
Date: Wed Nov 1 11:02:39 2017 +0530

    - PXC#885: IST hangs when keyring_file_data is set

      * When a node joins the cluster depending on existing
        state it is synced using SST or IST.

      * If SST is done then keyring needs is sent from DONOR
        to JOINER.

      * If IST is done only write-sets are send. keyring
        sync is not needed.

      bug was caused as the JOINER flow expected keyring
      even in IST flow.

Changed in percona-xtradb-cluster:
status: Triaged → Fix Committed
Lukasz Kawczynski (neuroid) wrote :

Thanks for resolving this so quickly. Any chance of releasing this in the near future?
BTW, I had a quick look at http://jenkins.percona.com but couldn't find a Debian build that would include this commit.

Krunal Bauskar (krunal-bauskar) wrote :

Lukasz,

You can checkout the fix here

https://github.com/percona/percona-xtradb-cluster/commit/58eb07b9cb62e679e5503a19e29d9af0b1593c64

(Fix is in wsrep_xtrabackup_v2.sh so no need of mysqld binary rebuild. Ignore test-case from the patch for now).

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While I have done my local testing it will go through a proper QA testing in due-course before we release next version and certify it. (Just incase you plan to use it for production system).

Lukasz Kawczynski (neuroid) wrote :

Hi Krunal,

I applied the patch and can confirm that this fixes the IST issue. Thanks again for your help.

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PXC-885

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