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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7256) Error when dropping keyspace.
Date Sat, 04 Oct 2014 15:59:34 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14159182#comment-14159182
] 

Aleksey Yeschenko commented on CASSANDRA-7256:
----------------------------------------------

[~jeremyschlatter] Are you still able to reproduce it? If so, is there any way you could upload
the schema sstables somewhere? Thanks.

> Error when dropping keyspace.  
> -------------------------------
>
>                 Key: CASSANDRA-7256
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7256
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: ubuntu 3 nodes (had 3 more in 2nd datacenter but removed it)
>            Reporter: Steven Lowenthal
>            Assignee: Aleksey Yeschenko
>
> created a 3 node datacenter  called existing.
> ran cassandra-stress:
> {{cassandra-stress -R NetworkTopologyStrategy -O existing:2 -d existing0 -n 2000000 -k}}
> Added a 2nd datacenter called new with 3 nodes started it with {{auto_bootstrap: false}}
> {code}
> alter keyspace "Keyspace1" with replication = {'class':'NetworkTopologyStrategy','existing':2,'new':2};
> {code}
> I then discovered that cassandra-stress --operation=read failed with LOCAL_QUORUM if
a node was down in the local datacenter - this occured in both, but should not have, so decided
to try again.
> I shut down the new datacenter and removed all 3 nodes.  I then tried to drop the Keyspace1
keyspace.  cqlsh disconnected, and the log shows the error below.
> {code}
> ERROR [MigrationStage:1] 2014-05-16 23:57:03,085 CassandraDaemon.java (line 198) Exception
in thread Thread[MigrationStage:1,5,main]
> java.lang.IllegalStateException: One row required, 0 found
> at org.apache.cassandra.cql3.UntypedResultSet.one(UntypedResultSet.java:53)
> at org.apache.cassandra.config.KSMetaData.fromSchema(KSMetaData.java:263)
> at org.apache.cassandra.db.DefsTables.mergeKeyspaces(DefsTables.java:227)
> at org.apache.cassandra.db.DefsTables.mergeSchema(DefsTables.java:182)
> at org.apache.cassandra.service.MigrationManager$2.runMayThrow(MigrationManager.java:303)
> at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
> {code}



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