[ https://issues.apache.org/jira/browse/HIVE-25492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Antal Sinkovits resolved HIVE-25492. ------------------------------------ Fix Version/s: 4.0.0 Resolution: Fixed Pushed to master. Thanks for the review [~dkuzmenko] > Major query-based compaction is skipped if partition is empty > ------------------------------------------------------------- > > Key: HIVE-25492 > URL: https://issues.apache.org/jira/browse/HIVE-25492 > Project: Hive > Issue Type: Bug > Affects Versions: 4.0.0-alpha-1, 4.0.0-alpha-2 > Reporter: Karen Coppage > Assignee: Antal Sinkovits > Priority: Major > Labels: pull-request-available > Fix For: 4.0.0 > > Time Spent: 2h 20m > Remaining Estimate: 0h > > Currently if the result of query-based compaction is an empty base, delta, or > delete delta, the empty directory is deleted. > This is because of minor compaction – if there are only deltas to compact, > then no compacted delete delta should be created (only a compacted delta). In > the same way, if there are only delete deltas to compact, then no compacted > delta should be created (only a compacted delete delta). > There is an issue with major compaction. If all the data in the partition has > been deleted, then we should get an empty base directory after compaction. > Instead, the empty base directory is deleted because it's empty and > compaction claims to succeed but we end up with the same deltas/delete deltas > we started with – basically compaction does not run. > Where to start? MajorQueryCompactor#commitCompaction -- This message was sent by Atlassian Jira (v8.20.1#820001)