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https://issues.apache.org/jira/browse/CASSANDRA-4540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13440932#comment-13440932
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Dave Brosius commented on CASSANDRA-4540:
-----------------------------------------

seems to work in the standard case here (mint). Do you have a huge number of 
snapshot directories?
                
> nodetool clearsnapshot broken: gives java.io.IOException when trying to 
> delete snapshot folder
> ----------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-4540
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4540
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Tools
>    Affects Versions: 1.1.2
>         Environment: Debian 6
>            Reporter: Christopher Lörken
>            Priority: Trivial
>              Labels: lhf
>             Fix For: 1.1.5
>
>
> nodetool clearsnapshots failes to delete snapshot directories and exits 
> prematurely causing the exception at the bottom.
> The actual snapshot files _within_ the directory are correctly deleted but 
> the folder itself is not deleted.
> I've chmodded all files and folders in the snapshots directory to 777 and 
> rund the command as root to exclude file permissions as a cause. I also 
> restarted cassandra which has no effect on the command.
> -----------
> root@server:/var/lib/cassandra/data/MyKeyspace/MyCf/snapshots# nodetool 
> clearsnapshot MyKeyspace
> Requested snapshot for: MyKeyspace
> Exception in thread "main" java.io.IOException: Failed to delete 
> /var/lib/cassandra/data/MyKeyspace/MyCf/snapshots/1344875270796
>         at 
> org.apache.cassandra.io.util.FileUtils.deleteWithConfirm(FileUtils.java:54)
>         at 
> org.apache.cassandra.io.util.FileUtils.deleteRecursive(FileUtils.java:220)
>         at 
> org.apache.cassandra.io.util.FileUtils.deleteRecursive(FileUtils.java:216)
>         at 
> org.apache.cassandra.db.Directories.clearSnapshot(Directories.java:371)
>         at 
> org.apache.cassandra.db.ColumnFamilyStore.clearSnapshot(ColumnFamilyStore.java:1560)
>         at org.apache.cassandra.db.Table.clearSnapshot(Table.java:268)
>         at 
> org.apache.cassandra.service.StorageService.clearSnapshot(StorageService.java:1866)
>         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 
> Source)
>         at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(Unknown 
> Source)
>         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 
> Source)
>         at javax.management.remote.rmi.RMIConnectionImpl.access$200(Unknown 
> Source)
>         at 
> javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(Unknown 
> Source)
>         at 
> javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(Unknown 
> Source)
>         at javax.management.remote.rmi.RMIConnectionImpl.invoke(Unknown 
> Source)
>         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 sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
>         at sun.rmi.transport.Transport$1.run(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 
> Source)
>         at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown 
> Source)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
>         at java.lang.Thread.run(Unknown Source)

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