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https://issues.apache.org/jira/browse/TRAFODION-1996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15322558#comment-15322558
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ASF GitHub Bot commented on TRAFODION-1996:
-------------------------------------------
GitHub user sbroeder opened a pull request:
https://github.com/apache/incubator-trafodion/pull/533
Fix fir JIRA [TRAFODION-1996] TLOG uses excessive memory when aging old
entries. Better logging for exception stack traces
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sbroeder/incubator-trafodion sean_traf
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-trafodion/pull/533.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #533
----
commit 8007949c8043aad25d3613f13153c488d61f6926
Author: Sean Broeder <[email protected]>
Date: 2016-05-16T16:36:57Z
Merge branch 'master' of github.com:apache/incubator-trafodion into
sean_traf
commit 69fe570bc743765446a873792be810638a191bdc
Author: Sean Broeder <[email protected]>
Date: 2016-06-07T21:41:56Z
Merge branch 'master' of github.com:apache/incubator-trafodion into
sean_traf
commit 68653b1a28f782ac084b3c9299e32f0f8c4a6539
Author: Sean Broeder <[email protected]>
Date: 2016-06-09T13:55:08Z
Merge branch 'master' of github.com:apache/incubator-trafodion into
sean_traf
commit 6b5da39b1a2b4359735439ff7095ba719b11786e
Author: Sean Broeder <[email protected]>
Date: 2016-06-09T13:59:37Z
Fix for JIRA [TRAFODION-1996]
TLOG uses excessive memory when aging old entries
----
> TLOG uses excessive memory when aging old entries
> -------------------------------------------------
>
> Key: TRAFODION-1996
> URL: https://issues.apache.org/jira/browse/TRAFODION-1996
> Project: Apache Trafodion
> Issue Type: Bug
> Components: dtm
> Affects Versions: 2.0-incubating
> Reporter: Sean Broeder
> Assignee: Sean Broeder
> Fix For: 2.1-incubating
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> When deleting old entries in the TLOG tables a complete table scan is
> performed and all regions for all TLOG tables are scanned in parallel. This
> was done to try to improve performance by attempting to delete all old
> entries as quickly as possible. However, with extremely large scans on busy
> systems the scans can become quite large and in a worst case scenario can
> starve out other requests in a regions server by dominating the handlers and
> potentially causing a RS failure due to a long GC pause.
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