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https://issues.apache.org/jira/browse/TRAFODION-2134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Selvaganesan Govindarajan closed TRAFODION-2134.
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> Change the overflow_mode to 'DISK' by default
> ---------------------------------------------
>
> Key: TRAFODION-2134
> URL: https://issues.apache.org/jira/browse/TRAFODION-2134
> Project: Apache Trafodion
> Issue Type: Bug
> Components: sql-exe
> Affects Versions: 2.1-incubating
> Reporter: Selvaganesan Govindarajan
> Assignee: Selvaganesan Govindarajan
> Fix For: 2.1-incubating
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> In queries involving Block Memory Operators (BMOs), Trafodion can overflow
> the data from the data flow into scratch files. These scratch files are
> currently being memory mapped which puts pressure on the memory usage on the
> node when there is large amount of overflow. The default needs to be changed
> to DISK
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