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From "Ryan Daum (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-713) Stacktrace when node taken offline
Date Wed, 10 Feb 2010 17:44:28 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12832092#action_12832092
] 

Ryan Daum commented on CASSANDRA-713:
-------------------------------------

I was able to rescue myself from this situation by restarting the node, so that does sound
like a plausible situation.

If I run into this again I will get you a thread stack dump from the running process.

> Stacktrace when node taken offline
> ----------------------------------
>
>                 Key: CASSANDRA-713
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-713
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 0.5
>            Reporter: Ryan Daum
>            Assignee: Jaakko Laine
>             Fix For: 0.5
>
>
> I took a node offline last week and then attempted to re-bootstrap its token range with
a new cassandra install on the same IP. I made gossip forget about the node by restarting
all other instances, then brought up the new node. It said was bootstrapping, but it never
finished bootstrapping after several days. The node never showed up in the ring, but when
I take it offline, I get the following exception continually from all other nodes in the cluster:
> ERROR [pool-1-thread-8] 2010-01-18 21:01:32,405 Cassandra.java (line 1096) Internal error
processing batch_insert
> java.lang.NullPointerException
>         at org.apache.cassandra.dht.BigIntegerToken.compareTo(BigIntegerToken.java:38)
>         at org.apache.cassandra.dht.BigIntegerToken.compareTo(BigIntegerToken.java:23)
>         at java.util.Collections.indexedBinarySearch(Collections.java:215)
>         at java.util.Collections.binarySearch(Collections.java:201)
>         at org.apache.cassandra.locator.AbstractReplicationStrategy.getHintedMapForEndpoints(AbstractReplicationStrategy.java:130)
>         at org.apache.cassandra.locator.AbstractReplicationStrategy.getHintedEndpoints(AbstractReplicationStrategy.java:76)
>         at org.apache.cassandra.service.StorageService.getHintedEndpointMap(StorageService.java:1183)
>         at org.apache.cassandra.service.StorageProxy.insertBlocking(StorageProxy.java:169)
>         at org.apache.cassandra.service.CassandraServer.doInsert(CassandraServer.java:466)
>         at org.apache.cassandra.service.CassandraServer.batch_insert(CassandraServer.java:445)
>         at org.apache.cassandra.service.Cassandra$Processor$batch_insert.process(Cassandra.java:1088)
>         at org.apache.cassandra.service.Cassandra$Processor.process(Cassandra.java:817)
>         at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:253)
>         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:619)
> In addition, I get frequent UnavailableExceptions on the other nodes.
> I cannot remove the token range for this node because it never officially joined the
ring.

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