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https://issues.apache.org/jira/browse/CASSANDRA-4221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13271922#comment-13271922
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Pavel Yaskevich commented on CASSANDRA-4221:
--------------------------------------------
I don't know which one is better tho because if compaction fails for some
reason which that scenario, wouldn't that mean that all SSTables that were left
behind are staying until somebody manually deletes them (or restart would drop
them)? We would have to add complexity to the schema merge just to handle that
case as well as on the local side...
> Error while deleting a columnfamily that is being compacted.
> ------------------------------------------------------------
>
> Key: CASSANDRA-4221
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4221
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.1.0
> Environment: ccm, dtest, cassandra-1.1. The error does not happen in
> cassandra-1.0.
> Reporter: Tyler Patterson
> Assignee: Pavel Yaskevich
> Fix For: 1.1.1
>
> Attachments: CASSANDRA-4221.patch
>
>
> The following dtest command produces an error:
> {code}export CASSANDRA_VERSION=git:cassandra-1.1; nosetests --nocapture
> --nologcapture
> concurrent_schema_changes_test.py:TestConcurrentSchemaChanges.load_test{code}
> Here is the error:
> {code}
> Error occured during compaction
> java.util.concurrent.ExecutionException: java.io.IOError:
> java.io.FileNotFoundException:
> /tmp/dtest-6ECMgy/test/node1/data/Keyspace1/Standard1/Keyspace1-Standard1-hc-47-Data.db
> (No such file or directory)
> at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)
> at java.util.concurrent.FutureTask.get(FutureTask.java:111)
> at
> org.apache.cassandra.db.compaction.CompactionManager.performMaximal(CompactionManager.java:239)
> at
> org.apache.cassandra.db.ColumnFamilyStore.forceMajorCompaction(ColumnFamilyStore.java:1580)
> at
> org.apache.cassandra.service.StorageService.forceTableCompaction(StorageService.java:1770)
> 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:616)
> at
> com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:111)
> at
> com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:45)
> at
> com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:226)
> at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138)
> at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:251)
> at
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:857)
> at
> com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:795)
> at
> javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1450)
> at
> javax.management.remote.rmi.RMIConnectionImpl.access$200(RMIConnectionImpl.java:90)
> at
> javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1285)
> at
> javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1383)
> at
> javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:807)
> 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:616)
> at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)
> at sun.rmi.transport.Transport$1.run(Transport.java:177)
> at java.security.AccessController.doPrivileged(Native Method)
> at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
> at
> sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:553)
> at
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808)
> at
> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:679)
> Caused by: java.io.IOError: java.io.FileNotFoundException:
> /tmp/dtest-6ECMgy/test/node1/data/Keyspace1/Standard1/Keyspace1-Standard1-hc-47-Data.db
> (No such file or directory)
> at
> org.apache.cassandra.io.sstable.SSTableScanner.<init>(SSTableScanner.java:61)
> at
> org.apache.cassandra.io.sstable.SSTableReader.getDirectScanner(SSTableReader.java:839)
> at
> org.apache.cassandra.io.sstable.SSTableReader.getDirectScanner(SSTableReader.java:851)
> at
> org.apache.cassandra.db.compaction.AbstractCompactionStrategy.getScanners(AbstractCompactionStrategy.java:142)
> at
> org.apache.cassandra.db.compaction.AbstractCompactionStrategy.getScanners(AbstractCompactionStrategy.java:148)
> at
> org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:121)
> at
> org.apache.cassandra.db.compaction.CompactionManager$6.runMayThrow(CompactionManager.java:264)
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> ... 3 more
> Caused by: java.io.FileNotFoundException:
> /tmp/dtest-6ECMgy/test/node1/data/Keyspace1/Standard1/Keyspace1-Standard1-hc-47-Data.db
> (No such file or directory)
> at java.io.RandomAccessFile.open(Native Method)
> at java.io.RandomAccessFile.<init>(RandomAccessFile.java:233)
> at
> org.apache.cassandra.io.util.RandomAccessReader.<init>(RandomAccessReader.java:67)
> at
> org.apache.cassandra.io.util.RandomAccessReader.open(RandomAccessReader.java:102)
> at
> org.apache.cassandra.io.util.RandomAccessReader.open(RandomAccessReader.java:87)
> at
> org.apache.cassandra.io.sstable.SSTableReader.openDataReader(SSTableReader.java:985)
> at
> org.apache.cassandra.io.sstable.SSTableScanner.<init>(SSTableScanner.java:56)
> ... 13 more
> {code}
> For reference, here is the dtest function that causes the failure. The error
> happens on the line near the bottom that drops the columnfamily:
> {code}
> def load_test(self):
>
> """
>
> apply schema changes while the cluster is under load.
>
> """
>
> debug("load_test()")
>
>
>
> cluster = self.cluster
>
> cluster.populate(1).start()
>
> node1 = cluster.nodelist()[0]
>
> wait(2)
>
> cursor = self.cql_connection(node1).cursor()
>
>
>
> def stress(args=[]):
>
> debug("Stressing")
>
> node1.stress(args)
>
> debug("Done Stressing")
>
>
>
> def compact():
>
> debug("Compacting...")
>
> node1.nodetool('compact')
>
> debug("Done Compacting.")
>
>
>
> # put some data into the cluster
>
> stress(['--num-keys=1000000'])
>
>
>
> # now start compacting...
> tcompact = Thread(target=compact)
>
> tcompact.start()
>
> wait(1)
>
>
>
> # now the cluster is under a lot of load. Make some schema changes.
>
> cursor.execute("USE Keyspace1")
>
> wait(1)
>
> cursor.execute("DROP COLUMNFAMILY Standard1")
>
>
>
> wait(3)
>
>
>
> cursor.execute("CREATE COLUMNFAMILY Standard1 (KEY text PRIMARY
> KEY)")
>
>
> tcompact.join()
>
>
> {code}
> Again, the error happens on cassandra-1.1, but not on cassandra-1.0.
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