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From "Alex Liu (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-6180) NPE in CqlRecordWriter: Related to AbstractCassandraStorage handling null values
Date Mon, 14 Oct 2013 05:56:43 GMT


Alex Liu commented on CASSANDRA-6180:

If we do need use  ByteBuffer.wrap(new byte[0]) to fix the issue, this should only apply to
CqlStorage, CassandraStorage should stay the old way.

> NPE in CqlRecordWriter: Related to AbstractCassandraStorage handling null values
> --------------------------------------------------------------------------------
>                 Key: CASSANDRA-6180
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>         Environment: Pig, CqlStorage
>            Reporter: Henning Kropp
>         Attachments: null_test.pig, patch.txt, test_null.cql, test_null_data
> I encountered an issue with the {{CqlStorage}} and it's handling of null values. The
{{CqlRecordWriter}} throws an NPE when a value is null. I found a related ticket CASSANDRA-5885
and applied the there stated fix to the {{AbstractCassandraStorage}}.
> Instead of converting {{null}} values to {{ByteBuffer.wrap(new byte[0])}} {{AbstractCassandraStorage}}
returns {{(ByteBuffer)null}}
> This issue can be reproduced with the attached files: {{test_null.cql}}, {{test_null_data}},
> A fix can be found in the attached patch.
> {code}
> java.lang.NullPointerException
> 	at org.apache.cassandra.hadoop.cql3.CqlRecordWriter$
> Caused by: java.lang.NullPointerException
> 	at org.apache.thrift.protocol.TBinaryProtocol.writeBinary(
> 	at org.apache.cassandra.thrift.Cassandra$execute_prepared_cql3_query_args.write(
> 	at org.apache.thrift.TServiceClient.sendBase(
> 	at org.apache.cassandra.thrift.Cassandra$Client.send_execute_prepared_cql3_query(
> 	at org.apache.cassandra.thrift.Cassandra$Client.execute_prepared_cql3_query(
> 	at org.apache.cassandra.hadoop.cql3.CqlRecordWriter$
> {code}

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