fix: locking the tables for too much time #214
Merged
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If the worker process the queue for a long time, it will preventing operations like TRUNCATE or VACUUM FULL from completing.
This is because it acquires an AccessShareLock on the extension tables and only releases it once it goes to sleep.
Now we use
ConditionalLockRelationOid
and unlock the tables at the end of each transaction, allowing VACUUM FULL or TRUNCATE to finish fast.