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List: cassandra-commits
Subject: [jira] [Created] (CASSANDRA-5211) Migrating Clusters with gossip tables that have old dead nodes cau
From: "Rick Branson (JIRA)" <jira () apache ! org>
Date: 2013-01-31 21:19:12
Message-ID: JIRA.12630218.1359667103536.225419.1359667152549 () arcas
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Rick Branson created CASSANDRA-5211:
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Summary: 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
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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