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  1. MariaDB Server
  2. MDEV-16242

MyRocks: parallel slave on a table without PK can stop with ER_KEY_NOT_FOUND

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      Description

      Note: Run the test case with RocksDB and slave-parallel-threads=2 (or more). If it doesn't fail right away, also run with repeat=N.

      # Run with --mysqld=--plugin-load-add=ha_rocksdb --mysqld=--slave-parallel-threads=2 --repeat=20
       
      --source include/have_binlog_format_row.inc
      --source include/master-slave.inc
       
      CREATE TABLE t1 (a INT) ENGINE=RocksDB;
      INSERT INTO t1 VALUES (1),(2),(3),(4);
       
      CREATE TABLE t2 (a INT) ENGINE=RocksDB SELECT * FROM t1;
      INSERT INTO t2 VALUES (5),(6),(7),(8);
      DELETE FROM t2;
       
      --sync_slave_with_master
       
      # Cleanup
      --connection master
      DROP TABLE t1, t2;
      --source include/rpl_end.inc
      

      10.2 afe5a51c2df95

      2018-05-22 14:56:42 139894937147136 [ERROR] mysqld: Can't find record in 't2'
      2018-05-22 14:56:42 139894937147136 [ERROR] Slave SQL: Could not execute Delete_rows_v1 event on table test.t2; Can't find record in 't2', Error_code: 1032; handler error HA_ERR_END_OF_FILE; the event's master log master-bin.000001, end_log_pos 1514, Gtid 0-1-5, Internal MariaDB error code: 1032
      2018-05-22 14:56:42 139894937147136 [Warning] Slave: Can't find record in 't2' Error_code: 1032
      2018-05-22 14:56:42 139894937147136 [ERROR] Error running query, slave SQL thread aborted. Fix the problem, and restart the slave SQL thread with "SLAVE START". We stopped at log 'master-bin.000001' position 1317
      

      Notes:

      • I don't see anything obvious in the binary log that could have caused it.
      • Not reproducible without parallel slave, or with parallel-slave-threads=1.
      • Not reproducible with InnoDB instead of RocksDB.

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              Assignee:
              psergei Sergei Petrunia
              Reporter:
              elenst Elena Stepanova
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                Updated:

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