kasakrisz opened a new pull request, #3420:
URL: https://github.com/apache/hive/pull/3420
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### What changes were proposed in this pull request?
Restore MV status query to check the txn log instead of stats.
### Why are the changes needed?
Compaction deletes the delete delta files so even if stats indicates that
there were updates on one of the mv source tables the delta is no longer
reproducible.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
```
mvn test -Dtest=TestMaterializedViewRebuild -pl itests/hive-unit -Pitests
mvn test -Dtest=TestTxnHandler -pl ql
```
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