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Date: Tue, 10 Apr 2012 08:18:13 +0000 (UTC)
From: =?utf-8?Q?Zklanu_Ry=C5=9B_=28Commented=29_=28JIRA=29?= <jira@apache.org>
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Subject: [jira] [Commented] (CASSANDRA-4118) ConcurrentModificationException
 in ColumnFamily.updateDigest(ColumnFamily.java:294)  (cassandra 1.0.8)
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    [ https://issues.apache.org/jira/browse/CASSANDRA-4118?page=3Dcom.atlas=
sian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D=
13250503#comment-13250503 ]=20

Zklanu Ry=C5=9B commented on CASSANDRA-4118:
---------------------------------------

@T Jake Luciani: what do you mean "doesn't really work"? We've been testing=
 this configuration for like 2 months and all seems to be working fine. We =
use "org.apache.cassandra.dht.RandomPartitioner". Is that a must to use the=
 lucandra partitioner?
               =20
> ConcurrentModificationException in ColumnFamily.updateDigest(ColumnFamily=
.java:294)  (cassandra 1.0.8)
> -------------------------------------------------------------------------=
-----------------------------
>
>                 Key: CASSANDRA-4118
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4118
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.0.8
>         Environment: two nodes, replication factor=3D2
>            Reporter: Zklanu Ry=C5=9B
>            Assignee: Vijay
>             Fix For: 1.0.10, 1.1.0
>
>
> Sometimes when reading data I receive them without any exception but I ca=
n see in Cassandra logs, that there is an error:
> ERROR [ReadRepairStage:58] 2012-04-05 12:04:35,732 AbstractCassandraDaemo=
n.java (line 139) Fatal exception in thread Thread[ReadRepairStage:58,5,mai=
n]
> java.util.ConcurrentModificationException
>     at java.util.AbstractList$Itr.checkForComodification(AbstractList.jav=
a:372)
>     at java.util.AbstractList$Itr.next(AbstractList.java:343)
>     at org.apache.cassandra.db.ColumnFamily.updateDigest(ColumnFamily.jav=
a:294)
>     at org.apache.cassandra.db.ColumnFamily.digest(ColumnFamily.java:288)
>     at org.apache.cassandra.service.RowDigestResolver.resolve(RowDigestRe=
solver.java:102)
>     at org.apache.cassandra.service.RowDigestResolver.resolve(RowDigestRe=
solver.java:30)
>     at org.apache.cassandra.service.ReadCallback$AsyncRepairRunner.runMay=
Throw(ReadCallback.java:227)
>     at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.jav=
a:30)

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