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https://issues.apache.org/jira/browse/HIVE-22593?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karen Coppage updated HIVE-22593:
---------------------------------
Attachment: HIVE-22593.02.patch
Status: Patch Available (was: Open)
> Dynamically partitioned MM (insert-only ACID) tables don't compact
> automatically
> --------------------------------------------------------------------------------
>
> Key: HIVE-22593
> URL: https://issues.apache.org/jira/browse/HIVE-22593
> Project: Hive
> Issue Type: Bug
> Reporter: Karen Coppage
> Assignee: Karen Coppage
> Priority: Major
> Attachments: HIVE-22593.01.patch, HIVE-22593.01.patch,
> HIVE-22593.02.patch
>
>
> Dynamic partitions of MM tables aren't entered into the HMS table
> TXN_COMPONENTS. On inserting into such tables we see this line in the HMS log:
> {code:java}
> Expected to move at least one record from txn_components to
> completed_txn_components when committing txn!{code}
> (This is not the case for non-partitioned MM tables.)
> Since the partitions aren't entered into COMPLETED_TXN_COMPONENTS, they
> aren't considered for automatic compaction.
> Probably the culprit is
> org.apache.hadoop.hive.ql.metadata.Hive#loadDynamicPartitions which has an
> isAcid parameter that is always false regarding MM tables, and also because
> MM tables' "write type" is AcidUtils.Operation.NOT_ACID and not INSERT.
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