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From "Navis (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-3226) ColumnPruner is not working on LateralView
Date Thu, 05 Jul 2012 02:10:34 GMT
Navis created HIVE-3226:
---------------------------

             Summary: ColumnPruner is not working on LateralView
                 Key: HIVE-3226
                 URL: https://issues.apache.org/jira/browse/HIVE-3226
             Project: Hive
          Issue Type: Bug
          Components: Query Processor
    Affects Versions: 0.10.0
            Reporter: Navis
            Assignee: Navis


Column pruning is not applied to LVJ and SEL operator, which makes exceptions at various stages.
For example,
{noformat}
drop table array_valued_src;
create table array_valued_src (key string, value array<string>);
insert overwrite table array_valued_src select key, array(value) from src;

select sum(val) from (select a.key as key, b.value as array_val from src a join array_valued_src
b on a.key=b.key) i lateral view explode (array_val) c as val;

... 9 more
Caused by: java.lang.RuntimeException: Reduce operator initialization failed
	at org.apache.hadoop.hive.ql.exec.ExecReducer.configure(ExecReducer.java:157)
	... 14 more
Caused by: java.lang.RuntimeException: cannot find field _col0 from [0:_col5]
	at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.getStandardStructFieldRef(ObjectInspectorUtils.java:345)
	at org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector.getStructFieldRef(StandardStructObjectInspector.java:143)
	at org.apache.hadoop.hive.ql.exec.ExprNodeColumnEvaluator.initialize(ExprNodeColumnEvaluator.java:57)
	at org.apache.hadoop.hive.ql.exec.Operator.initEvaluators(Operator.java:896)
	at org.apache.hadoop.hive.ql.exec.Operator.initEvaluatorsAndReturnStruct(Operator.java:922)
	at org.apache.hadoop.hive.ql.exec.SelectOperator.initializeOp(SelectOperator.java:60)
	at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:357)
	at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:433)
	at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:389)
	at org.apache.hadoop.hive.ql.exec.JoinOperator.initializeOp(JoinOperator.java:62)
	at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:357)
	at org.apache.hadoop.hive.ql.exec.ExecReducer.configure(ExecReducer.java:150)
{noformat}

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