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https://issues.apache.org/jira/browse/NIFI-4774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16373163#comment-16373163
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Mark Payne commented on NIFI-4774:
----------------------------------
I have submitted a new PR that allows the user to configure which
implementation of the write-ahead log to use.
> FlowFile Repository should write updates to the same FlowFile to the same
> partition
> -----------------------------------------------------------------------------------
>
> Key: NIFI-4774
> URL: https://issues.apache.org/jira/browse/NIFI-4774
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Mark Payne
> Priority: Major
> Fix For: 1.6.0
>
>
> As-is, in the case of power loss or Operating System crash, we could have an
> update that is lost, and then an update for the same FlowFile that is not
> lost, because the updates for a given FlowFile can span partitions. If an
> update were written to Partition 1 and then to Partition 2 and Partition 2 is
> flushed to disk by the Operating System and then the Operating System crashes
> or power is lost before Partition 1 is flushed to disk, we could lose the
> update to Partition 1.
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