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From: Subscriber <subscriber@zfabrik.de>
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Subject: Cassandra node throws NPE on startup
Date: Wed, 27 Apr 2011 13:22:05 +0200
Message-Id: <B6326D29-B144-4DDE-B460-8E4AE5819394@zfabrik.de>
To: user@cassandra.apache.org
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Hi,=20

I'm using Cassandra 0.7.4 on a three node cluster. The cluster was setup =
yesterday as a fresh installation (no upgrade).
The cluster is installed beside a hadoop cluster (I want to discover how =
cassandra works together with hadoop's map/reduce feature).

After loading some test data into the cassandra cluster (some text-files =
for a first wordcount m/r example ;-) I killed all nodes and restarted =
the cluster.
Two nodes are starting fine but the third node doesn't start and throws =
a NullPointerException:

 INFO 12:44:42,557 Finished reading =
/home/.../cassandra/work/commitlog/CommitLog-1303828029742.log
ERROR 12:44:42,558 Exception encountered during startup.
java.lang.NullPointerException
	at =
org.apache.cassandra.db.Table.createReplicationStrategy(Table.java:275)
	at org.apache.cassandra.db.Table.<init>(Table.java:221)
	at org.apache.cassandra.db.Table.open(Table.java:110)
	at =
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:273)
	at =
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:156)
	at =
org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassand=
raDaemon.java:173)
	at =
org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCass=
andraDaemon.java:314)
	at =
org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:79)
Exception encountered during startup.

This looks pretty much the same as issue =
https://issues.apache.org/jira/browse/CASSANDRA-1889 which is in =
resolution "cannot reproduce".

What can I do to make the node starting again?

Thanks in advance and best regards
Udo=

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<html><head></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space; =
">Hi,&nbsp;<div><br></div><div>I'm using Cassandra 0.7.4 on a three node =
cluster. The cluster was setup yesterday as a fresh installation (no =
upgrade).</div><div>The cluster is installed beside a hadoop cluster (I =
want to discover how cassandra works together with hadoop's map/reduce =
feature).</div><div><br></div><div>After loading some test data into the =
cassandra cluster (some text-files for a first wordcount m/r example ;-) =
I killed all nodes and restarted the cluster.</div><div>Two nodes are =
starting fine but the third node doesn't start and throws a =
NullPointerException:</div><div><br></div><div><div>&nbsp;INFO =
12:44:42,557 Finished reading =
/home/.../cassandra/work/commitlog/CommitLog-1303828029742.log</div><div>E=
RROR 12:44:42,558 Exception encountered during =
startup.</div><div>java.lang.NullPointerException</div><div><span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>at =
org.apache.cassandra.db.Table.createReplicationStrategy(Table.java:275)</d=
iv><div><span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>at =
org.apache.cassandra.db.Table.&lt;init&gt;(Table.java:221)</div><div><span=
 class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>at =
org.apache.cassandra.db.Table.open(Table.java:110)</div><div><span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>at =
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:273)</d=
iv><div><span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>at =
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:156)</d=
iv><div><span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>at =
org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassand=
raDaemon.java:173)</div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>at =
org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCass=
andraDaemon.java:314)</div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>at =
org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:79)<=
/div><div>Exception encountered during =
startup.</div></div><div><br></div><div>This looks pretty much the same =
as issue&nbsp;<a =
href=3D"https://issues.apache.org/jira/browse/CASSANDRA-1889">https://issu=
es.apache.org/jira/browse/CASSANDRA-1889</a>&nbsp;which is in resolution =
"cannot reproduce".</div><div><br></div><div>What can I do to make the =
node starting again?</div><div><br></div><div>Thanks in advance and best =
regards</div><div>Udo</div></body></html>=

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