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From Matthew Dennis <mden...@riptano.com>
Subject Re: java.lang.OutOfMemoryError: Map failed
Date Wed, 27 Oct 2010 18:49:04 GMT
2 GiB is pretty small for a C* node.  You can also try reducing all the
caching to zero with so little memory.  If you have lots of CFs you probably
want to reduce the memtable throughput too.

On Wed, Oct 27, 2010 at 12:43 PM, Koert Kuipers <
Koert.Kuipers@diamondnotch.com> wrote:

>  While bootstrapping a new node, the existing node that is supposed to
> provide the data throws an error, and the bootstrapping hangs. The log from
> the existing node is below. Both nodes have little memory (only 2 Gig,
> windows machines). I used default configurations (Cassandra 0.7). Any
> suggestions how to fix this? Should I just add memory? Thanks Koert
>
>
>
> INFO [STREAM_STAGE:1] 2010-10-27 11:53:09,905 StreamOut.java (line 127)
> Beginning transfer process to /192.168.162.102 - 62825437862633 for ranges
> (124804735337540159479107746638263794797,47070309318543332246917226414989217721]
>
>  INFO [STREAM_STAGE:1] 2010-10-27 11:53:09,905 StreamOut.java (line 101)
> Flushing memtables for timeseries...
>
>  INFO [STREAM_STAGE:1] 2010-10-27 11:53:09,905 StreamOut.java (line 205)
> Stream context metadata
> [C:\Devel\cassandra\data\timeseries\tickdata-e-82-Data.db/[(0,645809447),
> (1630778211,2136523711)],
> C:\Devel\cassandra\data\timeseries\tickdata-e-83-Data.db/[(0,51509)]], 2
> sstables.
>
>  INFO [STREAM_STAGE:1] 2010-10-27 11:53:09,905 StreamOut.java (line 179)
> Streaming file
> C:\Devel\cassandra\data\timeseries\tickdata-e-82-Data.db/[(0,645809447),
> (1630778211,2136523711)] to /192.168.162.102
>
> ERROR [MESSAGE-STREAMING-POOL:3] 2010-10-27 11:53:10,124
> DebuggableThreadPoolExecutor.java (line 102) Error in ThreadPoolExecutor
>
> java.lang.RuntimeException: java.io.IOException: Map failed
>
>                 at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34)
>
>                 at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>
>                 at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>
>                 at java.lang.Thread.run(Thread.java:662)
>
> Caused by: java.io.IOException: Map failed
>
>                 at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:758)
>
>                 at
> sun.nio.ch.FileChannelImpl.transferToTrustedChannel(FileChannelImpl.java:447)
>
>                 at
> sun.nio.ch.FileChannelImpl.transferTo(FileChannelImpl.java:520)
>
>                 at
> org.apache.cassandra.net.FileStreamTask.stream(FileStreamTask.java:96)
>
>                 at
> org.apache.cassandra.net.FileStreamTask.runMayThrow(FileStreamTask.java:61)
>
>                 at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
>
>                 ... 3 more
>
> Caused by: java.lang.OutOfMemoryError: Map failed
>
>                 at sun.nio.ch.FileChannelImpl.map0(Native Method)
>
>                 at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:755)
>
>                 ... 8 more
>
> ERROR [MESSAGE-STREAMING-POOL:3] 2010-10-27 11:53:10,124
> CassandraDaemon.java (line 75) Fatal exception in thread
> Thread[MESSAGE-STREAMING-POOL:3,5,main]
>
> java.lang.RuntimeException: java.io.IOException: Map failed
>
>                 at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34)
>
>                 at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>
>                 at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>
>                 at java.lang.Thread.run(Thread.java:662)
>
> Caused by: java.io.IOException: Map failed
>
>                 at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:758)
>
>                 at
> sun.nio.ch.FileChannelImpl.transferToTrustedChannel(FileChannelImpl.java:447)
>
>                 at
> sun.nio.ch.FileChannelImpl.transferTo(FileChannelImpl.java:520)
>
>                 at
> org.apache.cassandra.net.FileStreamTask.stream(FileStreamTask.java:96)
>
>                 at
> org.apache.cassandra.net.FileStreamTask.runMayThrow(FileStreamTask.java:61)
>
>                 at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
>
>                 ... 3 more
>
> Caused by: java.lang.OutOfMemoryError: Map failed
>
>                 at sun.nio.ch.FileChannelImpl.map0(Native Method)
>
>                 at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:755)
>
>                 ... 8 more
>



-- 
Riptano
Software and Support for Apache Cassandra
http://www.riptano.com/
mdennis@riptano.com
m: 512.587.0900 f: 866.583.2068

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