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https://issues.apache.org/jira/browse/HIVE-16360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16174187#comment-16174187
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Alan Gates commented on HIVE-16360:
-----------------------------------
+1
> Improve "No delta files or original files found to compact in" message
> ----------------------------------------------------------------------
>
> Key: HIVE-16360
> URL: https://issues.apache.org/jira/browse/HIVE-16360
> Project: Hive
> Issue Type: Improvement
> Components: Transactions
> Affects Versions: 1.2.0
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Attachments: HIVE-16360.01.patch, HIVE-16360.02.patch
>
>
> CompactorMR.run() produces
> {noformat}
> LOG.error("No delta files or original files found to compact in " +
> sd.getLocation() + " for compactionId=" + ci.id);
> {noformat}
> in some cases even where there are plenty of delta directories in the
> partition.
> The reason is that compactor won't compact anything above the level of an
> open transaction. So if there is a very long running txn, it may filter out
> all deltas in a partition. This looks very confusing when looking at the
> logs.
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