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https://issues.apache.org/jira/browse/CASSANDRA-12143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15365836#comment-15365836
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Sylvain Lebresne commented on CASSANDRA-12143:
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It's not: this is not committed, so this can't be in a released version.
> NPE when trying to remove purgable tombstones from result
> ---------------------------------------------------------
>
> Key: CASSANDRA-12143
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12143
> Project: Cassandra
> Issue Type: Bug
> Reporter: mck
> Assignee: mck
> Fix For: 2.2.x
>
> Attachments: 12143-2.2.txt
>
>
> A cluster running 2.2.6 started throwing NPEs.
> (500K exceptions on a node was seen.)
> {noformat}WARN … AbstractLocalAwareExecutorService.java:169 - Uncaught
> exception on thread Thread[SharedPool-Worker-5,5,main]: {}
> java.lang.NullPointerException: null{noformat}
> Bisecting this highlighted commit d3db33c008542c7044f3ed8c19f3a45679fcf52e as
> the culprit, which was a fix for CASSANDRA-11427.
> This commit added a line to "remove purgable tombstones from result" but
> failed to null check the {{data}} variable first. This variable comes from
> {{Row.cf}} which is permitted to be null where the CFS has no data.
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