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https://issues.apache.org/jira/browse/CASSANDRA-5211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon Williams updated CASSANDRA-5211:
----------------------------------------
Reviewer: slebresne
> Migrating Clusters with gossip tables that have old dead nodes causes NPE,
> inability to join cluster
> ----------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-5211
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5211
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.2.1
> Reporter: Rick Branson
> Assignee: Brandon Williams
> Fix For: 1.2.2
>
> Attachments: 5211.txt
>
>
> I had done a removetoken on this cluster when it was 1.1.x, and it had a
> "ghost" entry for the removed node still in the stored ring data. When the
> nodes loaded the table up after conversion to 1.2 and attempting to migrate
> to VNodes, I got the following traceback:
> ERROR [WRITE-/10.0.0.0] 2013-01-31 18:35:44,788 CassandraDaemon.java (line
> 133) Exception in thread Thread[WRITE-/10.0.0.0,5,main]
> java.lang.NullPointerException
> at
> org.apache.cassandra.utils.ByteBufferUtil.string(ByteBufferUtil.java:167)
> at
> org.apache.cassandra.utils.ByteBufferUtil.string(ByteBufferUtil.java:124)
> at org.apache.cassandra.cql.jdbc.JdbcUTF8.getString(JdbcUTF8.java:73)
> at org.apache.cassandra.cql.jdbc.JdbcUTF8.compose(JdbcUTF8.java:93)
> at org.apache.cassandra.db.marshal.UTF8Type.compose(UTF8Type.java:32)
> at
> org.apache.cassandra.cql3.UntypedResultSet$Row.getString(UntypedResultSet.java:96)
> at
> org.apache.cassandra.db.SystemTable.loadDcRackInfo(SystemTable.java:402)
> at
> org.apache.cassandra.locator.Ec2Snitch.getDatacenter(Ec2Snitch.java:117)
> at
> org.apache.cassandra.locator.DynamicEndpointSnitch.getDatacenter(DynamicEndpointSnitch.java:127)
> at
> org.apache.cassandra.net.OutboundTcpConnection.isLocalDC(OutboundTcpConnection.java:74)
> at
> org.apache.cassandra.net.OutboundTcpConnection.connect(OutboundTcpConnection.java:270)
> at
> org.apache.cassandra.net.OutboundTcpConnection.run(OutboundTcpConnection.java:142)
> This is because these ghost nodes had a NULL tokens list in the system/peers
> table. A workaround was to delete the offending row in the system/peers table
> and restart the node.
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