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Date: Sat, 20 Oct 2012 02:04:12 +0000 (UTC)
From: "Pavel Yaskevich (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
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Subject: [jira] [Commented] (CASSANDRA-4837) IllegalStateException when
 upgrading schema
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    [ https://issues.apache.org/jira/browse/CASSANDRA-4837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13480596#comment-13480596 ] 

Pavel Yaskevich commented on CASSANDRA-4837:
--------------------------------------------

Try following - stop that node, delete all files in schema_*, start the node with disabled gossip, re-create schema using CLI and reintroduce node to the ring.
                
> IllegalStateException when upgrading schema
> -------------------------------------------
>
>                 Key: CASSANDRA-4837
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4837
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.1.6
>         Environment: Linux
>            Reporter: Wade Simmons
>            Assignee: Pavel Yaskevich
>
> I am upgrading a cluster from 1.1.2 to 1.1.6. When restarting a node with new code, I am seeing this exception repeat in the logs:
> {code}
> ERROR [InternalResponseStage:21] 2012-10-19 00:41:26,794 AbstractCassandraDaemon.java (line 135) Exception in thread Thread[InternalResponseStage:21,5,main]
> java.lang.IllegalStateException: One row required, 0 found
>         at org.apache.cassandra.cql3.UntypedResultSet.one(UntypedResultSet.java:50)
>         at org.apache.cassandra.config.KSMetaData.fromSchema(KSMetaData.java:258)
>         at org.apache.cassandra.db.DefsTable.mergeKeyspaces(DefsTable.java:406)
>         at org.apache.cassandra.db.DefsTable.mergeSchema(DefsTable.java:355)
>         at org.apache.cassandra.db.DefsTable.mergeRemoteSchema(DefsTable.java:329)
>         at org.apache.cassandra.service.MigrationManager$MigrationTask$1.response(MigrationManager.java:449)
>         at org.apache.cassandra.net.ResponseVerbHandler.doVerb(ResponseVerbHandler.java:45)
>         at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:59)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at java.lang.Thread.run(Thread.java:662)
> {code}
> I added in some debugging logging to see what Row it was trying to load, and I see this:
> {code}
> Unable to load keyspace schema: Row(key=DecoratedKey(112573196966143652100562749464385838776, 5365676d656e7473496e746567726174696f6e54657374), cf=ColumnFamily(schema_keyspaces -deleted at 1350665377628000- []))
> {code}
> The hex key translates to a schema that exists in schema_keyspaces when I query on the rest of the cluster. I tried restarting one of the other nodes without upgrading the jar and it restarted without exceptions.

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