Eugene Koifman created HIVE-21266: ------------------------------------- Summary: Issue with single delta file Key: HIVE-21266 URL: https://issues.apache.org/jira/browse/HIVE-21266 Project: Hive Issue Type: Sub-task Affects Versions: 4.0.0 Reporter: Eugene Koifman Assignee: Vaibhav Gumashta
[https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/CompactorMR.java#L353-L357] {noformat} if ((deltaCount + (dir.getBaseDirectory() == null ? 0 : 1)) + origCount <= 1) { LOG.debug("Not compacting {}; current base is {} and there are {} deltas and {} originals", sd.getLocation(), dir .getBaseDirectory(), deltaCount, origCount); return; } {noformat} Is problematic. Suppose you have 1 delta file from streaming ingest: {{delta_11_20}} where {{txnid:13}} was aborted. The code above will not rewrite the delta (which drops anything that belongs to the aborted txn) and transition the compaction to "ready_for_cleaning" which will drop the metadata about the aborted txn. Now aborted data will come back as committed. -- This message was sent by Atlassian JIRA (v7.6.3#76005)