feat binlog apply optimization #1378
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added 2 commits
February 5, 2024 18:21
1. Support for ignoring binlog events that exceed chunk boundary values. 2. Support for binlog merge processing.
shaohk
requested review from
rashiq,
meiji163 and
timvaillancourt
as code owners
shaohk
changed the title
added 3 commits
February 6, 2024 14:39
When there is only one column in a unique index, merging of DML binlog events is permitted.
…tionRangeMaxValues is nil Add handling for the case when MigrationIterationRangeMaxValues is nil
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Description
Support for ignoring binlog events that exceed chunk boundary values.
If the value corresponding to the unique key of the binlog exceeds the maximum value of chunk iteration and is less than the maximum boundary value of the copy, it is ignored.
Support for binlog merge processing.
When the columns of the unique key selected by chunk are int or float, the binlog is processed by map merging, and all delete operations are merged into one
delete sql.All insert and update operations are merged into onereplace sql. Then execute these sql in db transaction.script/cibuildreturns with no formatting errors, build errors or unit test errors.