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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-7275) Errors in FlushRunnable may leave threads hung
Date Wed, 21 May 2014 03:34:38 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-7275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis updated CASSANDRA-7275:
--------------------------------------

    Priority: Minor  (was: Critical)

(Disagree that this is critical since the real bug is the IAE.)

> Errors in FlushRunnable may leave threads hung
> ----------------------------------------------
>
>                 Key: CASSANDRA-7275
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7275
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Tyler Hobbs
>            Priority: Minor
>             Fix For: 2.0.8
>
>
> In Memtable.FlushRunnable, the CountDownLatch will never be counted down if there are
errors, which results in hanging any threads that are waiting for the flush to complete. 
For example, an error like this causes the problem:
> {noformat}
> ERROR [FlushWriter:474] 2014-05-20 12:10:31,137 CassandraDaemon.java (line 198) Exception
in thread Thread[FlushWriter:474,5,main]
> java.lang.IllegalArgumentException
>     at java.nio.Buffer.position(Unknown Source)
>     at org.apache.cassandra.db.marshal.AbstractCompositeType.getBytes(AbstractCompositeType.java:64)
>     at org.apache.cassandra.db.marshal.AbstractCompositeType.getWithShortLength(AbstractCompositeType.java:72)
>     at org.apache.cassandra.db.marshal.AbstractCompositeType.split(AbstractCompositeType.java:138)
>     at org.apache.cassandra.io.sstable.ColumnNameHelper.minComponents(ColumnNameHelper.java:103)
>     at org.apache.cassandra.db.ColumnFamily.getColumnStats(ColumnFamily.java:439)
>     at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:194)
>     at org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:397)
>     at org.apache.cassandra.db.Memtable$FlushRunnable.runWith(Memtable.java:350)
>     at org.apache.cassandra.io.util.DiskAwareRunnable.runMayThrow(DiskAwareRunnable.java:48)
>     at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
>     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
>     at java.lang.Thread.run(Unknown Source)
> {noformat}



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