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From "nago n (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-2951) Hive map-join throws error !!
Date Fri, 13 Apr 2012 08:40:18 GMT
Hive map-join throws error !!
-----------------------------

                 Key: HIVE-2951
                 URL: https://issues.apache.org/jira/browse/HIVE-2951
             Project: Hive
          Issue Type: Bug
    Affects Versions: 0.7.0
            Reporter: nago n


I get this below message. What does this mean ? What is really leading for this issue ? what
should i do to resolve this ? i use joins in the query as if ( A left outer join B left outer
join C lefit out join D ) . whereas A is the Big table.

FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.MapredLocalTask

ATTEMPT: Execute BackupTask: org.apache.hadoop.hive.ql.exec.MapRedTask


I set manual properties :
----------------------------
set hive.mapjoin.localtask.max.memory.usage = 0.9; 
set hive.auto.convert.join = true; 
set hive.smalltable.filesize = 30000000; 

the default configuration is  :
----------------------------------
mapred.child.java.opts :        -Xmx2400m -XX:+UseConcMarkSweepGC -XX: +UseParNewGC -XX:+CMSParallelRemarkEnabled
-X:-UseAdaptiveSizePolicy - XX:+DisableExplicitGC 


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