mirror of https://github.com/citusdata/citus.git
8afa2d0386
This PR changes the order in which the locks are acquired (for the target and reference tables), when a modify request is initiated from a worker node that is not the "FirstWorkerNode". To prevent concurrent writes, locks are acquired on the first worker node for the replicated tables. When the update statement originates from the first worker node, it acquires the lock on the reference table(s) first, followed by the target table(s). However, if the update statement is initiated in another worker node, the lock requests are sent to the first worker in a different order. This PR unifies the modification order on the first worker node. With the third commit, independent of the node that received the request, the locks are acquired for the modified table and then the reference tables on the first node. The first commit shows a sample output for the test prior to the fix. Fixes #7477 --------- Co-authored-by: Jelte Fennema-Nio <jelte.fennema@microsoft.com> |
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