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From "Jaakko Laine (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-713) Stacktrace when node taken offline
Date Tue, 19 Jan 2010 05:26:54 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12802099#action_12802099
] 

Jaakko Laine commented on CASSANDRA-713:
----------------------------------------

two additional things:

How many nodes do you have and what replication factor you are using? If replication factor
is smaller than total amount of nodes, could you please verify that this happens on all nodes?


> 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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