Details
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Bug
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Status: Done
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Medium
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Resolution: Fixed
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3.0.11, 3.0.12
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- Ubuntu 16.04
- Percona XtraDB Cluster 5.7
Description
Hi,
we have a XtraDB Cluster with Galera replication running and use pt-table-checksum to verify the sync.
Up to version 3.0.10 all works fine but with v3.0.11 and the current 3.0.12 there are issues to check the replication.
I checked the differences to 3.0.10 and I identified the new function wait_for_slaves as source of the issues.
When I comment out the function call than all works fine again.
This function seems to work with other replication types but not with galera. Please fix.
# dpkg -l | grep percona ii percona-galera-3 3.21-0ubuntu0.16.04.1 amd64 Galera replication framework for Percona XtraDB Cluster ii percona-release 0.1-4.xenial all Package to install Percona gpg key and APT repo ii percona-toolkit 3.0.12-1.xenial amd64 Advanced MySQL and system command-line tools ii percona-xtrabackup-24 2.4.12-1.xenial amd64 Open source backup tool for InnoDB and XtraDB ii percona-xtradb-cluster-client-5.7 5.7.23-31.31-2.xenial amd64 Percona XtraDB Cluster database client binaries ii percona-xtradb-cluster-common-5.7 5.7.23-31.31-2.xenial amd64 Percona XtraDB Cluster database common files (e.g. /etc/mysql/my.cnf) ii percona-xtradb-cluster-server-5.7 5.7.23-31.31-2.xenial amd64 Percona XtraDB Cluster database server binaries
# Original: 3.0.12 pt-table-checksum # pt-table-checksum --databases phpmyadmin --replicate=percona.checksums --recursion-method=dsn=h=${HOST},D=percona,t=dsns,u=${MYSQLUSER},p=${MYSQLPASS} Checking if all tables can be checksummed ... Starting checksum ... Not checking replica lag on mysql9.db.cgn.ps-intern.de because it is a cluster node. 10-15T13:51:04 Error checksumming table phpmyadmin.pma__bookmark: Use of uninitialized value in concatenation (.) or string at /usr/bin/pt-table-checksum line 5521. TS ERRORS DIFFS ROWS DIFF_ROWS CHUNKS SKIPPED TIME TABLE 10-15T13:51:04 1 0 0 0 1 0 0.015 phpmyadmin.pma__bookmark 10-15T13:51:04 Error checksumming table phpmyadmin.pma__central_columns: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.010 phpmyadmin.pma__central_columns 10-15T13:51:04 Error checksumming table phpmyadmin.pma__column_info: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.010 phpmyadmin.pma__column_info 10-15T13:51:04 Error checksumming table phpmyadmin.pma__designer_settings: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.010 phpmyadmin.pma__designer_settings 10-15T13:51:04 Error checksumming table phpmyadmin.pma__export_templates: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.009 phpmyadmin.pma__export_templates 10-15T13:51:04 Error checksumming table phpmyadmin.pma__favorite: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.008 phpmyadmin.pma__favorite 10-15T13:51:04 Error checksumming table phpmyadmin.pma__history: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.008 phpmyadmin.pma__history 10-15T13:51:04 Error checksumming table phpmyadmin.pma__navigationhiding: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.009 phpmyadmin.pma__navigationhiding 10-15T13:51:04 Error checksumming table phpmyadmin.pma__pdf_pages: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.009 phpmyadmin.pma__pdf_pages 10-15T13:51:04 Error checksumming table phpmyadmin.pma__recent: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.009 phpmyadmin.pma__recent 10-15T13:51:04 Error checksumming table phpmyadmin.pma__relation: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.008 phpmyadmin.pma__relation 10-15T13:51:04 Error checksumming table phpmyadmin.pma__savedsearches: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.008 phpmyadmin.pma__savedsearches 10-15T13:51:04 Error checksumming table phpmyadmin.pma__table_coords: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.009 phpmyadmin.pma__table_coords 10-15T13:51:04 Error checksumming table phpmyadmin.pma__table_info: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.009 phpmyadmin.pma__table_info 10-15T13:51:04 Error checksumming table phpmyadmin.pma__table_uiprefs: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 1 0 1 0 0.009 phpmyadmin.pma__table_uiprefs 10-15T13:51:04 Error checksumming table phpmyadmin.pma__tracking: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.009 phpmyadmin.pma__tracking 10-15T13:51:04 Error checksumming table phpmyadmin.pma__userconfig: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 6 0 1 0 0.008 phpmyadmin.pma__userconfig 10-15T13:51:04 Error checksumming table phpmyadmin.pma__usergroups: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.007 phpmyadmin.pma__usergroups 10-15T13:51:04 Error checksumming table phpmyadmin.pma__users: I need a master_status argument at /usr/bin/pt-table-checksum line 5500. 10-15T13:51:04 1 0 0 0 1 0 0.008 phpmyadmin.pma__users
# Modified version of 3.0.12, diff below # pt-table-checksum.new --databases phpmyadmin --replicate=percona.checksums --recursion-method=dsn=h=${HOST},D=percona,t=dsns,u=${MYSQLUSER},p=${MYSQLPASS} Checking if all tables can be checksummed ... Starting checksum ... Not checking replica lag on mysql9.db.cgn.ps-intern.de because it is a cluster node. TS ERRORS DIFFS ROWS DIFF_ROWS CHUNKS SKIPPED TIME TABLE 10-15T13:52:35 0 0 0 0 1 0 0.010 phpmyadmin.pma__bookmark 10-15T13:52:35 0 0 0 0 1 0 0.011 phpmyadmin.pma__central_columns 10-15T13:52:35 0 0 0 0 1 0 0.011 phpmyadmin.pma__column_info 10-15T13:52:35 0 0 0 0 1 0 0.010 phpmyadmin.pma__designer_settings 10-15T13:52:35 0 0 0 0 1 0 0.011 phpmyadmin.pma__export_templates 10-15T13:52:35 0 0 0 0 1 0 0.009 phpmyadmin.pma__favorite 10-15T13:52:35 0 0 0 0 1 0 0.010 phpmyadmin.pma__history 10-15T13:52:35 0 0 0 0 1 0 0.011 phpmyadmin.pma__navigationhiding 10-15T13:52:35 0 0 0 0 1 0 0.009 phpmyadmin.pma__pdf_pages 10-15T13:52:35 0 0 0 0 1 0 0.011 phpmyadmin.pma__recent 10-15T13:52:35 0 0 0 0 1 0 0.011 phpmyadmin.pma__relation 10-15T13:52:35 0 0 0 0 1 0 0.010 phpmyadmin.pma__savedsearches 10-15T13:52:35 0 0 0 0 1 0 0.010 phpmyadmin.pma__table_coords 10-15T13:52:35 0 0 0 0 1 0 0.009 phpmyadmin.pma__table_info 10-15T13:52:35 0 0 1 0 1 0 0.010 phpmyadmin.pma__table_uiprefs 10-15T13:52:35 0 0 0 0 1 0 0.011 phpmyadmin.pma__tracking 10-15T13:52:35 0 0 6 0 1 0 0.010 phpmyadmin.pma__userconfig 10-15T13:52:35 0 0 0 0 1 0 0.010 phpmyadmin.pma__usergroups 10-15T13:52:35 0 0 0 0 1 0 0.010 phpmyadmin.pma__users
# diff -ruN /usr/bin/pt-table-checksum /usr/bin/pt-table-checksum.new --- /usr/bin/pt-table-checksum 2018-09-13 12:29:46.000000000 +0000 +++ /usr/bin/pt-table-checksum.new 2018-10-15 13:52:26.839469005 +0000 @@ -11298,7 +11298,7 @@ # MySQL 8+ replication is slower than 5.7 and the old wait_for_last_checksum alone # was failing. The new wait_for_slaves checks that Read_Master_Log_Pos on slaves is # greather or equal Position in the master - wait_for_slaves(master_dbh => $args\{Cxn}->dbh(), master_slave => $ms, slaves => $slaves); + #wait_for_slaves(master_dbh => $args\{Cxn}->dbh(), master_slave => $ms, slaves => $slaves); wait_for_last_checksum( tbl => $tbl, repl_table => $repl_table,
