Hi,
I am trying to running some MAPJOIN queries. When I am placing single
table in MAP JOIN it works fine,But when I run same query with two
tables on MAPJOIN it gives error. Can any tell me what could be the
problem? Here is the error log which I am getting from job tracker.
java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row
{"_col0":"5","_col87":"2010-12-16-00","_col89":"China","_col91":"2010-12-15-20"}
at org.apache.hadoop.hive.ql.exec.ExecMapper.map(ExecMapper.java:171)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:358)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
at org.apache.hadoop.mapred.Child.main(Child.java:170)
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row
{"_col0":"5","_col87":"2010-12-16-00","_col89":"China","_col91":"2010-12-15-20"}
at
org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:417)
at org.apache.hadoop.hive.ql.exec.ExecMapper.map(ExecMapper.java:153)
... 4 more
Caused by: java.lang.NullPointerException
at
org.apache.hadoop.hive.ql.exec.MapJoinOperator.processOp(MapJoinOperator.java:177)
at org.apache.hadoop.hive.ql.exec.Operator.process(Operator.java:457)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:697)
at
org.apache.hadoop.hive.ql.exec.SelectOperator.processOp(SelectOperator.java:84)
at org.apache.hadoop.hive.ql.exec.Operator.process(Operator.java:457)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:697)
at
org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:400)
... 5 more
Regard,
Jaydeep
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