[jira] [Created] (CASSANDRA-6433) snapshot race with compaction causes missing link error

["Karl Mueller (JIRA)" <ji...@apache.org>]

Karl Mueller created CASSANDRA-6433:
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             Summary: snapshot race with compaction causes missing link error
                 Key: CASSANDRA-6433
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6433
             Project: Cassandra
          Issue Type: Bug
         Environment: EL6
Oracle Java 1.7.40
            Reporter: Karl Mueller
            Priority: Minor


Cassandra 1.2.11

When trying to snapshot, I encountered this error. It appears that snapshot doesn't lock the sstable list in a keyspace which can cause a race condition with compaction. (I think it's compaction, at least)

[cassandra@dev-cass00 ~]$ cas cluster snap pre-1.2.12
*** dev-cass01 (1) ***
 
Nodetool command "snapshot -t pre-1.2.12" failed!
 
Output:
 
Requested creating snapshot for: all keyspaces
Exception in thread "main" java.lang.RuntimeException: Tried to hard link to file that does not exist /data2/data-cassandra/csprocessor/csprocessor/csprocessor-csprocessor-ic-4-Summary.db
        at org.apache.cassandra.io.util.FileUtils.createHardLink(FileUtils.java:72)
        at org.apache.cassandra.io.sstable.SSTableReader.createLinks(SSTableReader.java:1095)
        at org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1567)
        at org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1612)
        at org.apache.cassandra.db.Table.snapshot(Table.java:194)
        at org.apache.cassandra.service.StorageService.takeSnapshot(StorageService.java:2233)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:75)
        at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:279)
        at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:112)
        at com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:46)
        at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237)
        at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138)
        at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:252)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
        at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1487)
        at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:97)
        at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1328)
        at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1420)
        at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:848)
        at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)
        at sun.rmi.transport.Transport$1.run(Transport.java:177)
        at sun.rmi.transport.Transport$1.run(Transport.java:174)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:556)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:724)



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