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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2009/10/21 22:02:59 UTC
[jira] Updated: (CASSANDRA-507) Tombstone records in Cassandra are
not being deleted
[ https://issues.apache.org/jira/browse/CASSANDRA-507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis updated CASSANDRA-507:
-------------------------------------
Attachment: 507.patch
this patch fixes the bug in trunk.
unfortunately the risk/benefit of backporting this to the 0.4 branch is past my threshold of comfort.
> Tombstone records in Cassandra are not being deleted
> ----------------------------------------------------
>
> Key: CASSANDRA-507
> URL: https://issues.apache.org/jira/browse/CASSANDRA-507
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.4
> Reporter: Ramzi Rabah
> Attachments: 507.patch
>
>
> I am running into problems with get_key_range.
> My command is client.get_key_range("Keyspace1", "DatastoreDeletionSchedule",
> "", "", 25, ConsistencyLevel.ONE);
> After a lot of deletes on the datastore, I am getting
> ERROR [pool-1-thread-36] 2009-10-19 17:24:28,223 Cassandra.java (line
> 770) Internal error processing get_key_range
> java.lang.RuntimeException: java.util.concurrent.TimeoutException:
> Operation timed out.
> at org.apache.cassandra.service.StorageProxy.getKeyRange(StorageProxy.java:560)
> at org.apache.cassandra.service.CassandraServer.get_key_range(CassandraServer.java:595)
> at org.apache.cassandra.service.Cassandra$Processor$get_key_range.process(Cassandra.java:766)
> at org.apache.cassandra.service.Cassandra$Processor.process(Cassandra.java:609)
> at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:253)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
> at java.lang.Thread.run(Thread.java:619)
> Caused by: java.util.concurrent.TimeoutException: Operation timed out.
> at org.apache.cassandra.net.AsyncResult.get(AsyncResult.java:97)
> at org.apache.cassandra.service.StorageProxy.getKeyRange(StorageProxy.java:556)
> ... 7 more
> Turns out that the compaction code removes tombstones, and it runs whenever you have
> enough sstable fragments. As an optimization, if there is
> only one version of a row it will just copy it to the new sstable.
> This means it won't clean out tombstones, which is causing this problem.
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