HIVE-25189: Addendum: Cache validWriteIdList #6153
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What changes were proposed in this pull request?
Reintroduce caching of validWriteIdList for query used tables in a single step. Previously, CacheTableHelper attempted to retrieve it without even considering the table type and assumed an active transaction. Now, a transaction is opened only when necessary, making CacheTableHelper obsolete.
Why are the changes needed?
Performance/resource optimization
Does this PR introduce any user-facing change?
No
How was this patch tested?
Jenkins