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https://issues.apache.org/jira/browse/TRAFODION-2046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15325760#comment-15325760
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ASF GitHub Bot commented on TRAFODION-2046:
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Github user traflm closed the pull request at:
https://github.com/apache/incubator-trafodion/pull/537
> change DTM's memoryUsageChore default settings to enable memory threthold
> -------------------------------------------------------------------------
>
> Key: TRAFODION-2046
> URL: https://issues.apache.org/jira/browse/TRAFODION-2046
> Project: Apache Trafodion
> Issue Type: Improvement
> Reporter: liu ming
> Assignee: liu ming
>
> DTM provide MemoryUsageChore to monitor the memory pressure in a
> RegionServer, when memory is beyond a defined threshold, it will give a
> warning or prevent new operations based on a flag.
> By default, the threshold is now 100%, and the flag is just warning. So that
> means DTM coprocessor can use all RS memory and when it find memory pressure
> , just print warning, instead of control new transaction.
> This will lead to un-predictable behavior for certain fat transaction.
> It is better to change the default setting to enable protection.
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