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From Jim Green <openkbi...@gmail.com>
Subject Hive on Tez query failed with “wrong key class"
Date Tue, 21 Jul 2015 18:12:06 GMT
Hi Team,

Env: Hive 1.0 on Tez 0.5.3
Query is a simple group-by on top of sequence table.

It fails with below error on tez mode:
*java.lang.RuntimeException:
org.apache.hadoop.hive.ql.metadata.HiveException: *
*java.io.IOException: java.io.IOException: wrong key class:
org.apache.hadoop.io.BytesWritable is not class
org.apache.hadoop.io.NullWritable *

And it works fine in MR mode.
Anyone met this issue before?

-- 
Thanks,
www.openkb.info
(Open KnowledgeBase for Hadoop/Database/OS/Network/Tool)

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