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viewer healthcheck pathmerge stable 24 3 11 hotfix #11042

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StekPerepolnen
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  • Performance improvement
  • Bugfix
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maximyurchuk and others added 30 commits July 5, 2024 12:50
…lt (ydb-platform#6847)

merged 83a86c2 from main

Preserialize table's split boundaries the same way table partitions are. The size of both depend on the same variable: number of shards in the table, but TablePartitions was preserialized (and cached) while Table.SplitBoundaries wasn't. Preserializing all potentially huge parts of DescribeSchemeResult message before it gets to the interconnect saves interconnect actors additional serialization costs. And when partitioning of the huge tables goes through the period of a rapid change that additional serialization causes interconnect to overload.

Single shortcoming though: preserialized SplitBoundary is not used (cannot be used) when boundaries of the index tables are requested through describe request on table index.

KIKIMR-21686
…b-platform#6760) (ydb-platform#6849)

merged ebee36a from main

Add commit redo size check for successfully ignited operations as a precaution measure to avoid infinite loop of schemeshard hitting local tx commit redo size limit, restarting, attempting to propose persisted operation again, hitting commit redo size limit again, restarting and so on.

This could happen with inherently massive operations such as copy-tables used as a starting step of database export/backup.

Coping large number of tables with huge number of partitions can result in so large TTxOperationPropose local transaction that its size would hit the limit imposed by the tablet executor. Tablet violating that limit is considered broken and will be immediately stopped. See ydb/core/tablet_flat/flat_executor.cpp, NTabletFlatExecutor::TExecutor::ExecuteTransaction().

KIKIMR-21751
alexvru and others added 19 commits October 18, 2024 10:19
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🔴 Unable to merge your PR into the base branch. Please rebase or merge it with the base branch.

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