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https://issues.apache.org/jira/browse/HIVE-24275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kishen Das updated HIVE-24275:
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Description:
Whenever compaction happens, the cleaner immediately deletes older obsolete
files. In certain cases it would be beneficial to retain these for certain
period. For example : if you are serving the file metadata from cache and don't
want to invalidate the cache during compaction because of performance reasons.
For this purpose we should introduce a configuration
hive.compactor.delayed.cleanup.enabled, which if enabled will delay the
cleaning up obsolete files. There should be a separate configuration
CLEANER_RETENTION_TIME to specify the duration till which we should retain
these older obsolete files.
It might be beneficial to have one more configuration to decide whether to
retain files involved in an aborted transaction
hive.compactor.aborted.txn.delayed.cleanup.enabled .
was:
Whenever compaction happens, the cleaner immediately deletes older obsolete
files. In certain cases it would be beneficial to retain these for certain
period. For example : if you are serving the file metadata from cache and don't
want to invalidate the cache during compaction because of performance reasons.
For this purpose we should introduce a configuration
hive.compactor.delayed.cleanup.enabled, which if enabled will delay the
cleaning up obsolete files. There should be a separate configuration
CLEANER_RETENTION_TIME to specific the duration till which we should retain
these older obsolete files.
It might be beneficial to have one more configuration to decide whether to
retain files involved in an aborted transaction
hive.compactor.aborted.txn.delayed.cleanup.enabled .
> Configurations to delay the deletion of obsolete files by the Cleaner
> ---------------------------------------------------------------------
>
> Key: HIVE-24275
> URL: https://issues.apache.org/jira/browse/HIVE-24275
> Project: Hive
> Issue Type: New Feature
> Reporter: Kishen Das
> Priority: Major
>
> Whenever compaction happens, the cleaner immediately deletes older obsolete
> files. In certain cases it would be beneficial to retain these for certain
> period. For example : if you are serving the file metadata from cache and
> don't want to invalidate the cache during compaction because of performance
> reasons.
> For this purpose we should introduce a configuration
> hive.compactor.delayed.cleanup.enabled, which if enabled will delay the
> cleaning up obsolete files. There should be a separate configuration
> CLEANER_RETENTION_TIME to specify the duration till which we should retain
> these older obsolete files.
> It might be beneficial to have one more configuration to decide whether to
> retain files involved in an aborted transaction
> hive.compactor.aborted.txn.delayed.cleanup.enabled .
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