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https://issues.apache.org/jira/browse/NIFI-2850?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Payne updated NIFI-2850:
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Status: Patch Available (was: Open)
> Provide ability for a FlowFile to be migrated from one Process Session to
> another
> ---------------------------------------------------------------------------------
>
> Key: NIFI-2850
> URL: https://issues.apache.org/jira/browse/NIFI-2850
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Mark Payne
> Fix For: 1.1.0
>
>
> Currently, the MergeContent processor creates a separate ProcessSession for
> each FlowFile that it pulls. This is done so that we can ensure that we can
> commit all Process Sessions when a bin is full. Unfortunately, this means
> that MergeContent is required to call ProcessSession.get() many times, which
> adds a lot of contention on the FlowFile Queue. If we allow FlowFiles to be
> migrated from 1 session to another, we can have a session per bin, and then
> use ProcessSession.get(100) to greatly reduce lock contention. This will
> likely have benefits in other processors as well.
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