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From "mck (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-12143) NPE when trying to remove purgable tombstones from result
Date Wed, 06 Jul 2016 10:19:10 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-12143?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

mck updated CASSANDRA-12143:
----------------------------
    Description: 
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.

  was:
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.


> 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  … 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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