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Posted to commits@cassandra.apache.org by "Jonathan Ellis (Commented) (JIRA)" <ji...@apache.org> on 2012/03/06 17:24:58 UTC
[jira] [Commented] (CASSANDRA-4005) After running scrub , while
major compaction getting exception FileNotFound with (too many open files)
[ https://issues.apache.org/jira/browse/CASSANDRA-4005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13223377#comment-13223377 ]
Jonathan Ellis commented on CASSANDRA-4005:
-------------------------------------------
It's also worth noting that 0.8.x keeps FDs open until an old-gen GC completes, so in the meantime you have both the old and new ones around. If you have a low FD limit and/or a lot of sstables this can cause problems. This was changed in CASSANDRA-2521 for 1.0.x.
> After running scrub , while major compaction getting exception FileNotFound with (too many open files)
> ------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-4005
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4005
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.8.2
> Reporter: Samarth Gahire
> Priority: Minor
> Labels: compaction, exception, scrub
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> I was unable to trigger compaction on one of the column families so I ran scrub on that CF.
> After scrub when I tried to run compaction I got following error.
> {code}
> Error occured during compaction
> java.util.concurrent.ExecutionException: java.io.IOError: java.io.FileNotFoundException: /mnt2/var/lib/cassandra/data/AudienceNetwork/Audience-g-9898-Data.db (Too many open files)
> at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
> at java.util.concurrent.FutureTask.get(FutureTask.java:83)
> at org.apache.cassandra.db.compaction.CompactionManager.performMajor(CompactionManager.java:277)
> at org.apache.cassandra.db.ColumnFamilyStore.forceMajorCompaction(ColumnFamilyStore.java:1762)
> at org.apache.cassandra.service.StorageService.forceTableCompaction(StorageService.java:1358)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:93)
> at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:27)
> at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:208)
> at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:120)
> at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:262)
> at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836)
> at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761)
> at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1427)
> at javax.management.remote.rmi.RMIConnectionImpl.access$200(RMIConnectionImpl.java:72)
> at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1265)
> at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1360)
> at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:788)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
> at sun.rmi.transport.Transport$1.run(Transport.java:159)
> at java.security.AccessController.doPrivileged(Native Method)
> at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
> at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
> at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
> at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.io.IOError: java.io.FileNotFoundException: /mnt2/var/lib/cassandra/data/AudienceNetwork/Audience-g-9898-Data.db (Too many open files)
> at org.apache.cassandra.io.sstable.SSTableScanner.<init>(SSTableScanner.java:61)
> at org.apache.cassandra.io.sstable.SSTableReader.getDirectScanner(SSTableReader.java:660)
> at org.apache.cassandra.db.compaction.CompactionIterator.getCollatingIterator(CompactionIterator.java:92)
> at org.apache.cassandra.db.compaction.CompactionIterator.<init>(CompactionIterator.java:68)
> at org.apache.cassandra.db.compaction.CompactionManager.doCompactionWithoutSizeEstimation(CompactionManager.java:552)
> at org.apache.cassandra.db.compaction.CompactionManager.doCompaction(CompactionManager.java:506)
> at org.apache.cassandra.db.compaction.CompactionManager$4.call(CompactionManager.java:319)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> ... 3 more
> Caused by: java.io.FileNotFoundException: /mnt2/var/lib/cassandra/data/AudienceNetwork/Audience-g-9898-Data.db (Too many open files)
> at java.io.RandomAccessFile.open(Native Method)
> at java.io.RandomAccessFile.<init>(RandomAccessFile.java:212)
> at org.apache.cassandra.io.util.BufferedRandomAccessFile.<init>(BufferedRandomAccessFile.java:113)
> at org.apache.cassandra.io.sstable.SSTableScanner.<init>(SSTableScanner.java:57)
> ... 11 more
> {code}
> We are using cassndra-0.8.2 and I have set the ulimit to 1048576 on Ubuntu Lucid system.
> Also getting the same error while scrub.
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