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From: Jonathan Ellis <jbellis@gmail.com>
Date: Fri, 4 Jun 2010 07:47:17 -0700
Message-ID: <AANLkTimlx1qlQ1hrVS8pBWSGiE912007fhbzc8smkL-7@mail.gmail.com>
Subject: Re: Fatal exception in with compaction
To: user@cassandra.apache.org
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as the stacktrace suggests, HintedHandoffManager does major
compactions of just the hints columnfamily after hint delivery

2010/6/4 casablinca126.com <casablinca@126.com>:
> hi,
>        I have not used nodetool repair or nodetool compact . So how is Ma=
jorCompaction triggered?
>
> ------------------
> casablinca126.com
> 2010-06-04
>
> -------------------------------------------------------------
> =B7=A2=BC=FE=C8=CB=A3=BAcasablinca126.com
> =B7=A2=CB=CD=C8=D5=C6=DA=A3=BA2010-06-04 18:05:11
> =CA=D5=BC=FE=C8=CB=A3=BAuser
> =B3=AD=CB=CD=A3=BA
> =D6=F7=CC=E2=A3=BAFatal exception in with compaction
>
>  hi ,
>        I get a fatal exception with my cassandra cluster:
>                        java.lang.NoClassDefFoundErrororg/apache/cassandra=
/db/CompactionManager$4
>        at org.apache.cassandra.db.CompactionManager.submitMajor(Compactio=
nManager.java:156)
>        at org.apache.cassandra.db.CompactionManager.submitMajor(Compactio=
nManager.java:151)
>        at org.apache.cassandra.db.HintedHandOffManager.deliverAllHints(Hi=
ntedHandOffManager.java:205)
>        at org.apache.cassandra.db.HintedHandOffManager.access$000(HintedH=
andOffManager.java:80)
>        at org.apache.cassandra.db.HintedHandOffManager$1.runMayThrow(Hint=
edHandOffManager.java:100)
>        at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.=
java:30)
>        at java.lang.Thread.run(Thread.java:619)
> Caused by: java.lang.ClassNotFoundException: org.apache.cassandra.db.Comp=
actionManager$4
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
>        ... 7 more
>        I made a  modification  that , do not compact sstables whose size =
>10GB:
>         static Set<List<SSTableReader>> getBuckets(Iterable<SSTableReader=
> files, long min)
>    {
>        Map<List<SSTableReader>, Long> buckets =3D new HashMap<List<SSTabl=
eReader>, Long>();
>        for (SSTableReader sstable : files)
>        {
>            long size =3D sstable.length();
>                        if(size > 10L * 1024L * 1024L * 1024L)
>                                continue;
> Could some one help explain why this exception happened? Thanks a lot!
>
> regards,
>
> --------------
> casablinca126.com
> 2010-06-04
>
>
>


--=20
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com