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https://issues.apache.org/jira/browse/SOLR-6969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14297175#comment-14297175
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Mark Miller commented on SOLR-6969:
-----------------------------------
The testing could be improved, but I have added a basic test to hit the code
path and did a bunch of manual testing so that we can get this into 5.0.
> When opening an HDFSTransactionLog for append we must first attempt to
> recover it's lease to prevent data loss.
> ---------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-6969
> URL: https://issues.apache.org/jira/browse/SOLR-6969
> Project: Solr
> Issue Type: Bug
> Components: hdfs
> Reporter: Mark Miller
> Assignee: Mark Miller
> Priority: Critical
> Fix For: 5.0, Trunk
>
> Attachments: SOLR-6969.patch, SOLR-6969.patch
>
>
> This can happen after a hard crash and restart. The current workaround is to
> stop and wait it out and start again. We should retry and wait a given amount
> of time as we do when we detect safe mode though.
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