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From s p <nosqlcloud...@gmail.com>
Subject Re: Clearsnapshot Problem
Date Tue, 22 Mar 2011 17:48:46 GMT
Thanks. The problem is intermittent meaning we have separate CA cluster
environments: In some cases there is no problem running a snapshot followed
by a later clear snapshot (or for that matter physical delete of the
snapshot file).
When I stop Cassandra the snapshot file can be deleted. As soon as Cassandra
is started the file is locked.

While testing the above I monitored things with sysinternals (Handle,
ProcessExplorer, ProcMon). None of them show any open file handles/locks.

Am I missing something? I see you suggestion going to 0.6.12. Can the
existing cluster (0.6.2) be upgraded node by node?

-S

On Mon, Mar 21, 2011 at 11:45 PM, aaron morton <aaron@thelastpickle.com>wrote:

> There have been some issues to with deleting files on windows, cannot find
> a reference to it happening for snapshots.
>
> If you restart the node can you delete the snapshot?
>
> Longer term can you upgrade to 0.6.12 and let us know if it happens again?
> Any fix will be against that version.
>
> Hope that helps.
> Aaron
>
>
> On 22 Mar 2011, at 08:11, s p wrote:
>
> > I'm running 3-way CA cluster (0.62 ) on a windows 2008 (jre 1.6.24)
> 64-bit. Things are running fine except when trying to remove old snaphsot
> files. When running clearsnapshot I get an error msg like below.  I can't
> remove any daily snapshot files. When trying to delete the actual snapshot
> file os cmd file I get "access denied. File used by another process". Seems
> CA or JRE is sitting on file?
> >
> > Feedback much appreciated.
> >
> >
> > C:\Cassandra\
> > Exception in thread "main" java.io.IOException: Failed to delete
> c:\cassandra\da
> >
> ta\data\ks_SnapshotTest\snapshots\1300731301822-ks_SnapshotTest\cf_SnapshotTest-135-Data.db
> >         at
> org.apache.cassandra.io.util.FileUtils.deleteWithConfirm(FileUtils.ja
> > va:47)
> >         at
> org.apache.cassandra.io.util.FileUtils.deleteDir(FileUtils.java:189)
> >         at
> org.apache.cassandra.io.util.FileUtils.deleteDir(FileUtils.java:184)
> >         at
> org.apache.cassandra.io.util.FileUtils.deleteDir(FileUtils.java:184)
> >         at org.apache.cassandra.db.Table.clearSnapshot(Table.java:274)
> >         at
> org.apache.cassandra.service.StorageService.clearSnapshot(StorageServ
> > ice.java:1023)
> >         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> >         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
> Source)
> >         at java.lang.reflect.Method.invoke(Unknown Source)
> >         at
> com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(Unknown So
> > urce)
> >         at
> com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(Unknown So
> > urce)
> >         at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(Unknown
> Source)
> >         at com.sun.jmx.mbeanserver.PerInterface.invoke(Unknown Source)
> >         at com.sun.jmx.mbeanserver.MBeanSupport.invoke(Unknown Source)
> >         at
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown
> > Source)
> >         at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
> >         at
> javax.management.remote.rmi.RMIConnectionImpl.doOperation(Unknown Sou
> > rce)
> >         at
> javax.management.remote.rmi.RMIConnectionImpl.access$200(Unknown Sour
> > ce)
> >         at
> javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run
> > (Unknown Source)
> >         at
> javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(U
> > nknown Source)
> >         at javax.management.remote.rmi.RMIConnectionImpl.invoke(Unknown
> Source)
> >         at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source)
> >         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
> Source)
> >         at java.lang.reflect.Method.invoke(Unknown Source)
> >         at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
> >         at sun.rmi.transport.Transport$1.run(Unknown Source)
> >         at java.security.AccessController.doPrivileged(Native Method)
> >         at sun.rmi.transport.Transport.serviceCall(Unknown Source)
> >         at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown
> Source)
> >         at
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Sou
> > rce)
> >         at
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Sour
> > ce)
> >         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown
> Source
> > )
> >         at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
> Source)
> >         at java.lang.Thread.run(Unknown Source)
> >
> > C:\Cassandra\bin>
> >
> >
> >
> >
> >
>
>

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