lightning: support disable scheduler by key range #34130
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lichunzhu
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| zap.Error(err)) | ||
| } | ||
| return nil |
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Do we need to handle this error?
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Emm, it's hard to say. Until now, we didn't treat scatter region error as a critical error.
| @@ -478,13 +481,9 @@ func (local *local) checkScatterRegionFinishedOrReScatter(ctx context.Context, r | |||
| if respErr.GetType() == pdpb.ErrorType_REGION_NOT_FOUND { | |||
| return true, nil | |||
| } | |||
| // don't return error if region replicate not complete | |||
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We don't need to handle this error now, do we?
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It is moved to retriable errors.
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oh, it's caught by the caller.
Co-authored-by: Obliviate <756541536@qq.com>
buchuitoudegou
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Jun 24, 2022
| @@ -478,13 +481,9 @@ func (local *local) checkScatterRegionFinishedOrReScatter(ctx context.Context, r | |||
| if respErr.GetType() == pdpb.ErrorType_REGION_NOT_FOUND { | |||
| return true, nil | |||
| } | |||
| // don't return error if region replicate not complete | |||
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oh, it's caught by the caller.
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* upstream/master: (38 commits) planner: disable collate clause support for enum or set column (pingcap#35684) *: Provide a util to "pause" session in uint test (pingcap#35529) ddl: implement the core for multi-schema change (pingcap#35429) parser: XXXDatabaseStmt now use CIStr for DB name (pingcap#35668) *: remove real tikv test on github actions (pingcap#35710) lightning: support disable scheduler by key range (pingcap#34130) Revert "planner: fix the wrong cost formula of MPPExchanger" (pingcap#35707) ddl, owner: refresh ddl sequence cache after becoming the owner (pingcap#35516) store/copr: fix tiflash integration test by disable paging on tiflash (pingcap#35674) planner: new cost formula for IndexJoin (pingcap#35671) BR: fix backup ranges total time summary log (pingcap#35552) raw_restore: fix the issue that raw restore rewrite the t prefix keys (pingcap#35641) table: fix cannot find the temp table when it's created in a transaction (pingcap#35663) metrics: replace histogram with counter for DistSQLCoprCache (pingcap#35514) *: enable exportloopref (pingcap#35680) types: fix bad error message for numeric conversion issue#32744 (pingcap#34047) *: enable ineffassign (pingcap#35670) config, sysvar: map `max-server-connections` to `max_connections` (pingcap#35453) *: enable durationcheck for nogo linter (pingcap#35661) *: fix issue of cast string as time is incompatible with MySQL (pingcap#35455) ...
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What problem does this PR solve?
Issue Number: close #35148
Problem Summary:
We want to use lightning to import data to an online cluster. To reduce the impact on online services, lightning shouldn't disable the whole scheduler during importing. Instead, lightning should only disable the scheduler on the region that is being imported.
What is changed and how it works?
tikv/pd#4695 supported ttl for region label. We can use the region label to disable scheduler on specific key range, and recover scheduler automatically.
Check List
Tests
Release note
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