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From graham sanderson <gra...@vast.com>
Subject Re: ava.lang.OutOfMemoryError: unable to create new native thread
Date Wed, 17 Sep 2014 14:50:28 GMT
Are you running on a 32 bit JVM?

On Sep 17, 2014, at 9:43 AM, Yatong Zhang <blueflycn@gmail.com> wrote:

> Hi there,
> 
> I am using leveled compaction strategy and have many sstable files. The error was during
the startup, so any idea about this?
>  
> ERROR [FlushWriter:4] 2014-09-17 22:36:59,383 CassandraDaemon.java (line 199) Exception
in thread Thread[FlushWriter:4,5,main]
> java.lang.OutOfMemoryError: unable to create new native thread
>         at java.lang.Thread.start0(Native Method)
>         at java.lang.Thread.start(Thread.java:693)
>         at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:949)
>         at java.util.concurrent.ThreadPoolExecutor.processWorkerExit(ThreadPoolExecutor.java:1017)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1163)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> ERROR [FlushWriter:2] 2014-09-17 22:36:59,472 CassandraDaemon.java (line 199) Exception
in thread Thread[FlushWriter:2,5,main]
> FSReadError in /data5/cass/system/compactions_in_progress/system-compactions_in_progress-jb-23-Index.db
>         at org.apache.cassandra.io.util.MmappedSegmentedFile$Builder.createSegments(MmappedSegmentedFile.java:200)
>         at org.apache.cassandra.io.util.MmappedSegmentedFile$Builder.complete(MmappedSegmentedFile.java:168)
>         at org.apache.cassandra.io.sstable.SSTableWriter.closeAndOpenReader(SSTableWriter.java:334)
>         at org.apache.cassandra.io.sstable.SSTableWriter.closeAndOpenReader(SSTableWriter.java:324)
>         at org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:394)
>         at org.apache.cassandra.db.Memtable$FlushRunnable.runWith(Memtable.java:342)
>         at org.apache.cassandra.io.util.DiskAwareRunnable.runMayThrow(DiskAwareRunnable.java:48)
>         at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> Caused by: java.io.IOException: Map failed
>         at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:849)
>         at org.apache.cassandra.io.util.MmappedSegmentedFile$Builder.createSegments(MmappedSegmentedFile.java:192)
>         ... 10 more
> Caused by: java.lang.OutOfMemoryError: Map failed
>         at sun.nio.ch.FileChannelImpl.map0(Native Method)
>         at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:846)
>         ... 11 more
> 


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