[jira] [Created] (HIVE-3872) MAP JOIN for VIEW thorws NULL pointer exception error

["Santosh Achhra (JIRA)" <ji...@apache.org>]

Santosh Achhra created HIVE-3872:
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             Summary: MAP JOIN  for VIEW thorws NULL pointer exception error
                 Key: HIVE-3872
                 URL: https://issues.apache.org/jira/browse/HIVE-3872
             Project: Hive
          Issue Type: Bug
          Components: Views
    Affects Versions: 0.9.0
            Reporter: Santosh Achhra
            Priority: Critical


I have created a view  as shown below. 

CREATE VIEW V1 AS
select /*+ MAPJOIN(t1) ,MAPJOIN(t2)  */ t1.f1, t1.f2, t1.f3, t1.f4, t2.f1, t2.f2, t2.f3 from TABLE1 t1 join TABLE t2 on ( t1.f2= t2.f2 and t1.f3 = t2.f3 and t1.f4 = t2.f4 ) group by t1.f1, t1.f2, t1.f3, t1.f4, t2.f1, t2.f2, t2.f3

View get created successfully however when I execute below mentioned SQL or any SQL on the view  get NULLPOINTER exception error

hive> select count (*) from V1;
FAILED: NullPointerException null
hive>

Is there anything wrong with the view creation ?

Next I created view without MAPJOIN hints 

CREATE VIEW V1 AS
select  t1.f1, t1.f2, t1.f3, t1.f4, t2.f1, t2.f2, t2.f3 from TABLE1 t1 join TABLE t2 on ( t1.f2= t2.f2 and t1.f3 = t2.f3 and t1.f4 = t2.f4 ) group by t1.f1, t1.f2, t1.f3, t1.f4, t2.f1, t2.f2, t2.f3

Before executing select SQL I excute set  hive.auto.convert.join=true; 

I am getting beloow mentioned warnings
java.lang.InstantiationException: org.apache.hadoop.hive.ql.parse.ASTNodeOrigin
Continuing ...
java.lang.RuntimeException: failed to evaluate: <unbound>=Class.new();
Continuing ...


And I see from log that total 5 mapreduce jobs are started however when don't set auto.convert.join to true, I see only 3 mapreduce jobs getting invoked.
Total MapReduce jobs = 5
Ended Job = 1116112419, job is filtered out (removed at runtime).
Ended Job = -33256989, job is filtered out (removed at runtime).
WARNING: org.apache.hadoop.metrics.jvm.EventCounter is deprecated. Please use org.apache.hadoop.log.metrics.EventCounter in all the log4j.properties files.

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