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https://issues.apache.org/jira/browse/GEODE-8513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17204118#comment-17204118
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ASF GitHub Bot commented on GEODE-8513:
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jdeppe-pivotal commented on pull request #5532:
URL: https://github.com/apache/geode/pull/5532#issuecomment-700826120
IIRC, the reason this functionality was added was so that webapps could be
hot-deployed which would require sessions to be 'rebuilt' since the classloader
would have changed. I'm not sure if this is still a valid scenario.
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> DeltaSesssionManager writes all sessions to disk on shutdown
> ------------------------------------------------------------
>
> Key: GEODE-8513
> URL: https://issues.apache.org/jira/browse/GEODE-8513
> Project: Geode
> Issue Type: Bug
> Components: http session
> Reporter: Jacob Barrett
> Assignee: Jacob Barrett
> Priority: Major
> Labels: pull-request-available
>
> DeltaSesssionManager executes a query to fetch all sessions for the current
> context shutting down and then serializes them to disk. There is no need to
> do this since the sessions are persisted in the session region on the
> servers.
> This leads:
> * to unaccounted for disk usage.
> * execution of a potentially large query at shutdown.
> * class casting executions in antlr in some Tomcat instances.
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