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From "Karl Mueller (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1883) NPE in get_slice quorum read
Date Sat, 18 Dec 2010 21:28:01 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12972872#action_12972872
] 

Karl Mueller commented on CASSANDRA-1883:
-----------------------------------------

Additional information: one of the SSD raid0s went bad recently.  This may have produced weird
data for one cassandra node.   

> NPE in get_slice quorum read
> ----------------------------
>
>                 Key: CASSANDRA-1883
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1883
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 0.7.0
>         Environment: Linux Fedora 12 x86_64
>            Reporter: Karl Mueller
>            Priority: Minor
>             Fix For: 0.7.0
>
>
> Getting this NPE as of the 2010-12-17 0.7 trunk.  Some data may be corrupt somewhere
on a node.  It could be a null key somewhere.
> ERROR [pool-1-thread-28] 2010-12-18 12:53:20,411 Cassandra.java (line 2707) Internal
error processing get_slice
> java.lang.NullPointerException
>         at org.apache.cassandra.service.DigestMismatchException.<init>(DigestMismatchException.java:30)
>         at org.apache.cassandra.service.ReadResponseResolver.resolve(ReadResponseResolver.java:92)
>         at org.apache.cassandra.service.ReadResponseResolver.resolve(ReadResponseResolver.java:43)
>         at org.apache.cassandra.service.QuorumResponseHandler.get(QuorumResponseHandler.java:91)
>         at org.apache.cassandra.service.StorageProxy.strongRead(StorageProxy.java:362)
>         at org.apache.cassandra.service.StorageProxy.readProtocol(StorageProxy.java:229)
>         at org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:128)
>         at org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:225)
>         at org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:301)
>         at org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:263)
>         at org.apache.cassandra.thrift.Cassandra$Processor$get_slice.process(Cassandra.java:2699)
>         at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2555)
>         at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:167)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
>         at java.lang.Thread.run(Thread.java:636)

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