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https://issues.apache.org/jira/browse/TRAFODION-1703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15128572#comment-15128572
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ASF GitHub Bot commented on TRAFODION-1703:
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Github user asfgit closed the pull request at:
https://github.com/apache/incubator-trafodion/pull/296
> Lower overhead in deleting old Tlog entries
> -------------------------------------------
>
> Key: TRAFODION-1703
> URL: https://issues.apache.org/jira/browse/TRAFODION-1703
> Project: Apache Trafodion
> Issue Type: Improvement
> Components: dtm
> Affects Versions: 1.3-incubating
> Reporter: Sean Broeder
> Assignee: Sean Broeder
> Fix For: 1.3-incubating
>
> Original Estimate: 336h
> Remaining Estimate: 336h
>
> Currently, Tlog entries are maintained for a period of time when there is a
> chance they might be needed to help recover from some sort of failure. After
> that widow expires the old records can be deleted.
> The current mechanism starts a scanner on the region which sends every record
> to the client Tlog component where the record is evaluated and if the
> deletion criteria are met a Delete is created and sent back to the region.
> This creates a lot of unnecessary message traffic since none of the contents
> of the record is actually needed by the Tlog component during the maintenance
> operation.
> It would be better to send the deletion criteria to the region so that the
> region itself to perform the necessary housekeeping without sending all the
> data back to the client Tlog component.
> I believe the endpoint coprocessor service could be used to perform this work.
> Comments?
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