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From Sergio Peña (JIRA) <j...@apache.org>
Subject [jira] [Updated] (HIVE-13825) Using JOIN in 2 tables that has same path locations, but different colum names fail wtih an error exception
Date Tue, 24 May 2016 16:12:12 GMT

     [ https://issues.apache.org/jira/browse/HIVE-13825?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sergio Peña updated HIVE-13825:
-------------------------------
    Summary: Using JOIN in 2 tables that has same path locations, but different colum names
fail wtih an error exception  (was: Map joins with cloned tables with same locations, but
different column names throw error exceptions)

> Using JOIN in 2 tables that has same path locations, but different colum names fail wtih
an error exception
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-13825
>                 URL: https://issues.apache.org/jira/browse/HIVE-13825
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Sergio Peña
>
> The following scenario of 2 tables with same locations cannot be used on a JOIN query:
> {noformat}
> hive> create table t1 (a string, b string) location '/user/hive/warehouse/test1';
> OK
> hive> create table t2 (c string, d string) location '/user/hive/warehouse/test1';
> OK
> hive> select t1.a from t1 join t2 on t1.a = t2.c;
> ...
> 2016-05-23 16:39:57     Starting to launch local task to process map join;      maximum
memory = 477102080
> Execution failed with exit status: 2
> Obtaining error information
> Task failed!
> Task ID:
>   Stage-4
> Logs:
> FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapredLocalTask
> {noformat}
> The logs contain this error exception:
> {noformat}
> 2016-05-23T16:39:58,163 ERROR [main]: mr.MapredLocalTask (:()) - Hive Runtime Error:
Map local work failed
> java.lang.RuntimeException: cannot find field a from [0:c, 1:d]
>         at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.getStandardStructFieldRef(ObjectInspectorUtils.java:485)
>         at org.apache.hadoop.hive.serde2.BaseStructObjectInspector.getStructFieldRef(BaseStructObjectInspector.java:133)
>         at org.apache.hadoop.hive.ql.exec.ExprNodeColumnEvaluator.initialize(ExprNodeColumnEvaluator.java:55)
>         at org.apache.hadoop.hive.ql.exec.Operator.initEvaluators(Operator.java:973)
>         at org.apache.hadoop.hive.ql.exec.Operator.initEvaluatorsAndReturnStruct(Operator.java:999)
>         at org.apache.hadoop.hive.ql.exec.SelectOperator.initializeOp(SelectOperator.java:75)
>         at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:355)
>         at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:504)
>         at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:457)
>         at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:365)
>         at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:504)
>         at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:457)
>         at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:365)
>         at org.apache.hadoop.hive.ql.exec.mr.MapredLocalTask.initializeOperators(MapredLocalTask.java:499)
>         at org.apache.hadoop.hive.ql.exec.mr.MapredLocalTask.startForward(MapredLocalTask.java:403)
>         at org.apache.hadoop.hive.ql.exec.mr.MapredLocalTask.executeInProcess(MapredLocalTask.java:383)
>         at org.apache.hadoop.hive.ql.exec.mr.ExecDriver.main(ExecDriver.java:751)
> {noformat}



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