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Posted to commits@cassandra.apache.org by "mck (JIRA)" <ji...@apache.org> on 2016/07/06 10:15:11 UTC

[jira] [Created] (CASSANDRA-12143) NPE when trying to remove purgable tombstones from result

mck created CASSANDRA-12143:
-------------------------------

             Summary: 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


A cluster running 2.2.6 started throwing NPEs.
(500K exceptions on a node was seen.)

{noformat}WARN  [SharedPool-Worker-5] 2016-06-29 00:46:15,708 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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