Add a flag for table access method to force exclusive write #969
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This commit adds a flag in table access method to force exclusive write. The feature allows writing of a table, i.e. insert/delete/ update, to be not concurrently safe.
reshke
reviewed
Feb 27, 2025
| if (resultRelInfo->ri_RelationDesc->rd_tableam && | ||
| (table_scan_flags(resultRelInfo->ri_RelationDesc) & SCAN_FORCE_BIG_WRITE_LOCK)) | ||
| { | ||
| LockRelation(resultRelInfo->ri_RelationDesc, ExclusiveLock); |
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Hmm, when will unlock happen?
|
what's scenario need ? |
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This commit adds a flag in table access method to force exclusive write. The feature allows writing of a table, i.e. insert/delete/ update, to be not concurrently safe.
What does this PR do?
Type of Change
Breaking Changes
Test Plan
make installcheckmake -C src/test installcheck-cbdb-parallelImpact
Performance:
User-facing changes:
Dependencies:
Checklist
Additional Context
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