[jira] [Created] (CASSANDRA-6180) NPE in CqlRecordWriter: Related to AbstractCassandraStorage handling null values

["Henning Kropp (JIRA)" <ji...@apache.org>]

Henning Kropp created CASSANDRA-6180:
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             Summary: NPE in CqlRecordWriter: Related to AbstractCassandraStorage handling null values
                 Key: CASSANDRA-6180
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6180
             Project: Cassandra
          Issue Type: Bug
          Components: Hadoop
         Environment: Pig, CqlStorage
            Reporter: Henning Kropp


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 state 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}}, {{null_test.pig}}

A fix can be found in the attached patch.

{code}
java.io.IOException: java.lang.NullPointerException
	at org.apache.cassandra.hadoop.cql3.CqlRecordWriter$RangeClient.run(CqlRecordWriter.java:248)
Caused by: java.lang.NullPointerException
	at org.apache.thrift.protocol.TBinaryProtocol.writeBinary(TBinaryProtocol.java:194)
	at org.apache.cassandra.thrift.Cassandra$execute_prepared_cql3_query_args.write(Cassandra.java:41253)
	at org.apache.thrift.TServiceClient.sendBase(TServiceClient.java:63)
	at org.apache.cassandra.thrift.Cassandra$Client.send_execute_prepared_cql3_query(Cassandra.java:1683)
	at org.apache.cassandra.thrift.Cassandra$Client.execute_prepared_cql3_query(Cassandra.java:1673)
	at org.apache.cassandra.hadoop.cql3.CqlRecordWriter$RangeClient.run(CqlRecordWriter.java:232)
{code}



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