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From Ramesh Natarajan <rames...@gmail.com>
Subject Re: Internal error processing get: Null pointer exception
Date Wed, 02 Nov 2011 14:57:24 GMT
Are we doing anything wrong here? or can this be a bug in cassandra?

thanks
Ramesh

On Tue, Nov 1, 2011 at 11:02 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
> That doesn't make sense to me.  CS:147 is
>
>            columnFamilyKeyMap.put(row.key, row.cf);
>
> where cFKM is
>
>        Map<DecoratedKey, ColumnFamily> columnFamilyKeyMap = new
> HashMap<DecoratedKey, ColumnFamily>();
>
> So cFKM can't be null, and HashMap accomodates both null key and null
> value, so I'm not sure what there is to thorw NPE.
>
> On Tue, Nov 1, 2011 at 5:56 PM, Ramesh Natarajan <ramesh25@gmail.com> wrote:
>> We have a 8 node cassandra cluster running cassandra 1.0.0.  After a
>> while in our load testing we are seeing Null pointer exception on
>> gets. Attached is the stack trace
>>
>>
>> ERROR [pool-2-thread-2241] 2011-11-01 15:52:19,335 Cassandra.java
>> (line 2999) Internal error processing get
>> java.lang.NullPointerException
>>        at org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:147)
>>        at org.apache.cassandra.thrift.CassandraServer.internal_get(CassandraServer.java:383)
>>        at org.apache.cassandra.thrift.CassandraServer.get(CassandraServer.java:401)
>>        at org.apache.cassandra.thrift.Cassandra$Processor$get.process(Cassandra.java:2989)
>>        at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)
>>        at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
>>        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)
>>
>> Is this a known issue?
>>
>> thanks
>> Ramesh
>>
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>

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