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From "Benjamin Lerer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9460) NullPointerException Creating Digest
Date Wed, 15 Jul 2015 10:42:04 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14627872#comment-14627872
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Benjamin Lerer commented on CASSANDRA-9460:
-------------------------------------------

[~Stefania] The patch did not apply to trunk. Can you provide another one for trunk? 

> NullPointerException Creating Digest
> ------------------------------------
>
>                 Key: CASSANDRA-9460
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9460
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Tyler Hobbs
>            Assignee: Stefania
>             Fix For: 2.1.x
>
>         Attachments: node2.log
>
>
> In the {{consistency_test.TestConsistency.short_read_test}} dtest against cassandra-2.1,
the following error occured:
> {noformat}
> ERROR [ReadRepairStage:3] 2015-05-22 16:35:25,034 CassandraDaemon.java:223 - Exception
in thread Thread[ReadRepairStage:3,5,main]
> java.lang.NullPointerException: null
>     at org.apache.cassandra.db.ColumnFamily.updateDigest(ColumnFamily.java:390) ~[main/:na]
>     at org.apache.cassandra.db.ColumnFamily.digest(ColumnFamily.java:383) ~[main/:na]
>     at org.apache.cassandra.service.RowDigestResolver.resolve(RowDigestResolver.java:84)
~[main/:na]
>     at org.apache.cassandra.service.RowDigestResolver.resolve(RowDigestResolver.java:28)
~[main/:na]
>     at org.apache.cassandra.service.ReadCallback$AsyncRepairRunner.run(ReadCallback.java:176)
~[main/:na]
>     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
~[na:1.7.0_80]
>     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
~[na:1.7.0_80]
>     at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_80]
> {noformat}
> From a glance at the code in the stacktrace, it looks like there was a null cell in the
ColumnFamily that we were creating a digest of.  This error is probably particular to "short
reads".
> Here's the failing test: http://cassci.datastax.com/job/cassandra-2.1_dtest/lastCompletedBuild/testReport/consistency_test/TestConsistency/short_read_test/.
 I've attached the logs for the node with the error.
> We saw this issue against 2.1, but the problem may also exist with 2.0 and/or 2.2.



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