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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-74) Hive can use CombineFileInputFormat for when the input are many small files
Date Thu, 20 Nov 2008 09:40:44 GMT
Hive can use CombineFileInputFormat for when the input are many small files
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                 Key: HIVE-74
                 URL: https://issues.apache.org/jira/browse/HIVE-74
             Project: Hadoop Hive
          Issue Type: Improvement
            Reporter: dhruba borthakur
            Assignee: dhruba borthakur
             Fix For: 0.20.0


There are cases when the input to a Hive job are thousands of small files. In this case, there
is a mapper for each file. Most of the overhead for spawning all these mappers can be avoided
if Hive used CombineFileInputFormat introduced via HADOOP-4565

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