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From Jeff Williams <je...@wherethebitsroam.com>
Subject Problem with Keyspace after drop
Date Thu, 03 May 2012 16:35:00 GMT
Hi,

I'm doing testing and wanted to drop a keyspace (with a column family) to re-add it with a
different strategy. So I ran in cqlsh:

DROP KEYSPACE PlayLog;

CREATE KEYSPACE PlayLog WITH strategy_class = 'SimpleStrategy'
  AND strategy_options:replication_factor = 2;

And everything seemed to be fine. I ran some inserts, which also seemed to go fine, but then
selecting them gave me:

cqlsh:PlayLog> select count(*) from playlog;
TSocket read 0 bytes

I wasn't sure what was wrong, so I tried dropping and creating again, and now when I try to
create I get:

cqlsh> CREATE KEYSPACE PlayLog WITH strategy_class = 'SimpleStrategy'
   ...   AND strategy_options:replication_factor = 2;
TSocket read 0 bytes

And the keyspace doesn't get created. In the log it shows:

ERROR [Thrift:4] 2012-05-03 18:23:05,124 CustomTThreadPoolServer.java (line 204) Error occurred
during processing of message.
java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.AssertionError
        at org.apache.cassandra.utils.FBUtilities.waitOnFuture(FBUtilities.java:372)
        at org.apache.cassandra.service.MigrationManager.announce(MigrationManager.java:191)
        at org.apache.cassandra.service.MigrationManager.announceNewKeyspace(MigrationManager.java:129)
        at org.apache.cassandra.cql.QueryProcessor.processStatement(QueryProcessor.java:701)
        at org.apache.cassandra.cql.QueryProcessor.process(QueryProcessor.java:875)
        at org.apache.cassandra.thrift.CassandraServer.execute_cql_query(CassandraServer.java:1235)
        at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql_query.getResult(Cassandra.java:3458)
        at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql_query.getResult(Cassandra.java:3446)
        at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:32)
        at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34)
        at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:186)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.util.concurrent.ExecutionException: java.lang.AssertionError
        at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
        at java.util.concurrent.FutureTask.get(Unknown Source)
        at org.apache.cassandra.utils.FBUtilities.waitOnFuture(FBUtilities.java:368)
        ... 13 more
Caused by: java.lang.AssertionError
        at org.apache.cassandra.db.DefsTable.updateKeyspace(DefsTable.java:441)
        at org.apache.cassandra.db.DefsTable.mergeKeyspaces(DefsTable.java:339)
        at org.apache.cassandra.db.DefsTable.mergeSchema(DefsTable.java:269)
        at org.apache.cassandra.service.MigrationManager$1.call(MigrationManager.java:214)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        ... 3 more
ERROR [MigrationStage:1] 2012-05-03 18:23:05,124 AbstractCassandraDaemon.java (line 134) Exception
in thread Thread[MigrationStage:1,5,main]
java.lang.AssertionError
        at org.apache.cassandra.db.DefsTable.updateKeyspace(DefsTable.java:441)
        at org.apache.cassandra.db.DefsTable.mergeKeyspaces(DefsTable.java:339)
        at org.apache.cassandra.db.DefsTable.mergeSchema(DefsTable.java:269)
        at org.apache.cassandra.service.MigrationManager$1.call(MigrationManager.java:214)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

Any ideas how I can recover from this?

Jeff


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