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Posted to mapreduce-issues@hadoop.apache.org by "alex.lv (JIRA)" <ji...@apache.org> on 2013/09/26 05:50:03 UTC
[jira] [Created] (MAPREDUCE-5537) hive return different results
with and without index when
hive.hadoop.supports.splittable.combineinputformat =true
alex.lv created MAPREDUCE-5537:
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Summary: hive return different results with and without index when hive.hadoop.supports.splittable.combineinputformat =true
Key: MAPREDUCE-5537
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5537
Project: Hadoop Map/Reduce
Issue Type: Bug
Reporter: alex.lv
the environment:
hive-0.8.1
hadoop-0.20.2-cdh3u6
the Presentation:
i use the hive-0.8.1 to exec the query:
select count(*) from table t1;
the table t1 is lzo formatted ,and the follows is :
# Storage Information
SerDe Library: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
InputFormat: com.hadoop.mapred.DeprecatedLzoTextInputFormat
OutputFormat: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
and the hive.hadoop.supports.splittable.combineinputformat =true
when i index the table t1,the result is 265329 .
when i remove the index of the t1,the result is 265325.
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