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https://issues.apache.org/jira/browse/CASSANDRA-7783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14099338#comment-14099338
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Jimmy Mårdell commented on CASSANDRA-7783:
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Ah, okay. And not so easy to backport to the 1.2 branch by the look of things.
> Snapshot repairs can hang forever
> ---------------------------------
>
> Key: CASSANDRA-7783
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7783
> Project: Cassandra
> Issue Type: Bug
> Reporter: Jimmy Mårdell
>
> When the AntiEntropService sends the snapshot repair request, it sets up a
> callback in an ExpiringMap. If the time it takes for the snapshot exceeds the
> RPC timeout, the callback will expire from the map and the snapshot responses
> will be dropped. The repair then gets stuck forever blocking at the
> snapshotLatch. It's not even possible to kill the repair with
> forceTerminateAllRepairSessions()
> This is likely fixed in 2.0 since that part of the code is completely
> rewritten.
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