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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4976) "AssertionError: Wrong class type" at CounterColumn.diff()
Date Fri, 23 Nov 2012 02:34:58 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13502991#comment-13502991
] 

Jonathan Ellis commented on CASSANDRA-4976:
-------------------------------------------

+1
                
> "AssertionError: Wrong class type" at CounterColumn.diff()
> ----------------------------------------------------------
>
>                 Key: CASSANDRA-4976
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4976
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.1.6
>            Reporter: J.B. Langston
>            Assignee: Sylvain Lebresne
>              Labels: counters
>             Fix For: 1.1.7
>
>         Attachments: 4976.txt
>
>
> Thousands of the following errors are getting logged to system.log:
> ERROR [ReadRepairStage:150152] 2012-11-15 12:31:02,815 AbstractCassandraDaemon.java (line
135) Exception in thread Thread[ReadRepairStage:150152,5,main]
> java.lang.AssertionError: Wrong class type.
>         at org.apache.cassandra.db.CounterColumn.diff(CounterColumn.java:110)
>         at org.apache.cassandra.db.ColumnFamily.diff(ColumnFamily.java:248)
>         at org.apache.cassandra.db.ColumnFamily.diff(ColumnFamily.java:342)
>         at org.apache.cassandra.service.RowRepairResolver.scheduleRepairs(RowRepairResolver.java:117)
>         at org.apache.cassandra.service.RowRepairResolver.resolve(RowRepairResolver.java:94)
>         at org.apache.cassandra.service.AsyncRepairCallback$1.runMayThrow(AsyncRepairCallback.java:54)
>         at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at java.lang.Thread.run(Thread.java:662)
> There are also many of the following errors intermingled with the above:
> ERROR [ReadRepairStage:150158] 2012-11-15 12:30:34,148 CounterContext.java (line 381)
invalid counter shard detected; (b29a5480-e911-11e1-0000-ce481d6d2aff, 3, 916) and (b29a5480-e911-11e1-0000-ce481d6d2aff,
3, -1590) differ only in count; will pick highest to self-heal; this indicates a bug or corruption
generated a bad counter shard
> I am not 100% sure whether they are related.

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