DM 1.0.2 Release Notes

Release date: October 30, 2019

DM version: 1.0.2

DM-Ansible version: 1.0.2

Improvements

• Generate some config items for DM-worker automatically
• Generate some config items for migration task automatically
• Simplify the output of query-status without arguments
• Manage DB connections directly for downstream

Bug fixes

• Fix some panic when starting up or executing SQL statements
• Fix abnormal sharding DDL migration on DDL execution timeout
• Fix starting task failure caused by the checking timeout or any inaccessible DM-worker
• Fix SQL execution retry for some error

Detailed bug fixes and changes

• Generate random server-id for DM-worker config automatically #337
• Generate flavor for DM-worker config automatically #328
• Generate relay-binlog-name and relay-binlog-gtid for DM-worker config automatically #318
• Generate the name list of tables to be dumped in task config from black & white table lists automatically #326
• Add concurrency items (mydumper-thread, loader-thread and syncer-thread) for task config #314
• Simplify the output of query-status without arguments #340
• Fix abnormal sharding DDL migration on DDL execution timeout #338
• Fix potential DM-worker panic when restoring subtask from local meta #311
• Fix DM-worker panic when committing a DML transaction failed #313
• Fix DM-worker or DM-master panic when the listening port is being used #301
• Fix retry for error code 1105 #321, #332
• Fix retry for Duplicate entry and Data too long for column #313
• Fix task check timeout when having large amounts of tables in upstream #327
• Fix starting task failure when any DM-worker is not accessible #319
• Fix potential DM-worker startup failure in GTID mode after being recovered from corrupt relay log #339
• Fix in-memory TPS count for sync unit #294
• Manage DB connections directly for downstream #325
• Improve the error system by refining error information passed between components #320