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From "Joshua McKenzie (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7262) During streaming: java.lang.AssertionError: Reference counter -1
Date Wed, 21 May 2014 14:36:38 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14004710#comment-14004710
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Joshua McKenzie commented on CASSANDRA-7262:
--------------------------------------------

You say band-aid, I say specificity.  I prefer to sync around a single resource if it's a
concurrency problem and promote the synchronization abstraction up the chain if / when we
run into other resources that need synchronization for both complexity and performance reasons
(though performance in this context is admittedly not a big concern).

That being said - I'm fine either way.  I'll synchronize the various paths into closeSession
while looking into the CompactionTask issue.

> During streaming: java.lang.AssertionError: Reference counter -1
> ----------------------------------------------------------------
>
>                 Key: CASSANDRA-7262
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7262
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: Cassandra 2.07, x86-64 Ubuntu 12.04.4, Oracle java 1.7.0_45
>            Reporter: Duncan Sands
>            Assignee: Joshua McKenzie
>            Priority: Minor
>             Fix For: 2.0.8, 2.1 rc1
>
>         Attachments: 7262_v1.txt, system.log.gz
>
>
> Got this assertion failure this weekend during repair:
> ERROR [STREAM-IN-/192.168.21.14] 2014-05-17 01:17:52,332 StreamSession.java (line 420)
[Stream #3a3ac8a2-dd50-11e3-b3c1-6bf6dccd6457] Streaming error occurred
> java.lang.RuntimeException: Outgoing stream handler has been closed
>         at org.apache.cassandra.streaming.ConnectionHandler.sendMessage(ConnectionHandler.java:170)
>         at org.apache.cassandra.streaming.StreamSession.receive(StreamSession.java:483)
>         at org.apache.cassandra.streaming.StreamSession.messageReceived(StreamSession.java:372)
>         at org.apache.cassandra.streaming.ConnectionHandler$IncomingMessageHandler.run(ConnectionHandler.java:289)
>         at java.lang.Thread.run(Thread.java:744)
> ERROR [STREAM-IN-/192.168.21.14] 2014-05-17 01:17:52,350 CassandraDaemon.java (line 198)
Exception in thread Thread[STREAM-IN-/192.168.21.14,5,RMI Runtime]
> java.lang.AssertionError: Reference counter -1 for /mnt/ssd1/cassandra/data/ldn_production/historical_accounts/ldn_production-historical_accounts-jb-79827-Data.db
>         at org.apache.cassandra.io.sstable.SSTableReader.releaseReference(SSTableReader.java:1107)
>         at org.apache.cassandra.streaming.StreamTransferTask.abort(StreamTransferTask.java:80)
>         at org.apache.cassandra.streaming.StreamSession.closeSession(StreamSession.java:322)
>         at org.apache.cassandra.streaming.StreamSession.onError(StreamSession.java:425)
>         at org.apache.cassandra.streaming.ConnectionHandler$IncomingMessageHandler.run(ConnectionHandler.java:300)
>         at java.lang.Thread.run(Thread.java:744)
> followed by a few more (the reference counter got down to -3).  Got the same kind of
assertion failure on one other node (in a different data centre; there are 21 nodes altogether
distributed over 4 data centres).
> I've attached the relevant part of the log.  It starts quite a bit before the assertion
failure at the first exception on this node ("Cannot proceed on repair because a neighbor
... is dead"), and finishes a few hours afterwards when the node was restarted.
> Edit: The following Reference counter assertion failures followed the 1st on a different
file and have a different stack trace:
> ERROR [CompactionExecutor:382] 2014-05-17 01:17:53,157 CassandraDaemon.java (line 198)
Exception in thread Thread[CompactionExecutor:382,1,main]
> java.lang.AssertionError: Reference counter -1 for /mnt/ssd1/cassandra/data/ldn_production/historical_accounts/ldn_production-historical_accounts-jb-83888-Data.db
>    at org.apache.cassandra.io.sstable.SSTableReader.releaseReference(SSTableReader.java:1107)
>    at org.apache.cassandra.io.sstable.SSTableReader.releaseReferences(SSTableReader.java:1429)
>    at org.apache.cassandra.db.compaction.CompactionController.close(CompactionController.java:207)
>    at org.apache.cassandra.db.compaction.CompactionTask.runWith(CompactionTask.java:220)
>    at org.apache.cassandra.io.util.DiskAwareRunnable.runMayThrow(DiskAwareRunnable.java:48)
>    at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
>    at org.apache.cassandra.db.compaction.CompactionTask.executeInternal(CompactionTask.java:60)
>    at org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:59)
>    at org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionTask.run(CompactionManager.java:197)
>    ...



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