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From Sylvain Lebresne <sylv...@datastax.com>
Subject Re: Problem in adding a new node
Date Fri, 08 Jun 2012 15:52:24 GMT
Do you use a 32 bit JVM ? If so I refer you to the following thread:
http://mail-archives.apache.org/mod_mbox/cassandra-user/201204.mbox/%3CCALdd-zgthkSC2bikp3H4TRjxO5VCnhKL2WpWcLSf+d9SQtycow@mail.gmail.com%3E

In short, avoids 32 bits, but if you really cannot, set
commitlog_total_space_in_mb to a low value (128-256MB)

--
Sylvain

On Fri, Jun 8, 2012 at 9:14 AM, Prakrati Agrawal
<Prakrati.Agrawal@mu-sigma.com> wrote:
> Dear all,
>
>
>
> I had a 1 node cluster of Cassandra. Then I added one more node to it and
> started Cassandra on it. I got the following error:
>
>
>
> INFO 12:44:49,588 Loading persisted ring state
>
> ERROR 12:44:49,613 Exception in thread Thread[COMMIT-LOG-ALLOCATOR,5,main]
>
> java.io.IOError: java.io.IOException: Map failed
>
>                 at
> org.apache.cassandra.db.commitlog.CommitLogSegment.<init>(CommitLogSegment.java:127)
>
>                 at
> org.apache.cassandra.db.commitlog.CommitLogAllocator$3.run(CommitLogAllocator.java:191)
>
>                 at
> org.apache.cassandra.db.commitlog.CommitLogAllocator$1.runMayThrow(CommitLogAllocator.java:95)
>
>                 at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
>
>                 at java.lang.Thread.run(Thread.java:662)
>
> Caused by: java.io.IOException: Map failed
>
>                 at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:748)
>
>                 at
> org.apache.cassandra.db.commitlog.CommitLogSegment.<init>(CommitLogSegment.java:119)
>
>                 ... 4 more
>
> Caused by: java.lang.OutOfMemoryError: Map failed
>
>                 at sun.nio.ch.FileChannelImpl.map0(Native Method)
>
>                 at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:745)
>
>
>
> Please tell me what is the reason for this error and how should I rectify
> it.
>
>
>
> Thanks and Regards
>
> Prakrati
>
>
>
>
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