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https://issues.apache.org/jira/browse/HIVE-22755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17020832#comment-17020832
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Peter Vary commented on HIVE-22755:
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I have 2 ideas:
* Time based approach: use the start time of the minOpenTxn to filter the files
to clean
* Instead of skipping every read lock, create a read lock per table instead of
per partition. This would fix some failures created by the previous patch with
the added benefit of knowing what tables are under read.
CC: [~lpinter], [~dkuzmenko]
> Cleaner/Compaction can skip the read locks and use the min open txn id
> ----------------------------------------------------------------------
>
> Key: HIVE-22755
> URL: https://issues.apache.org/jira/browse/HIVE-22755
> Project: Hive
> Issue Type: Sub-task
> Components: Transactions
> Reporter: Slim Bouguerra
> Priority: Major
> Fix For: 4.0.0
>
>
> The minOpenTxnId is used by the Cleaner here
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Cleaner.java#L154
> This currently converts it to open write-ids to clean appropriately.
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