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From "Joydeep Sen Sarma (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-2051) getInputSummary() to call FileSystem.getContentSummary() in parallel
Date Wed, 16 Mar 2011 02:42:29 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13007323#comment-13007323
] 

Joydeep Sen Sarma commented on HIVE-2051:
-----------------------------------------

looked at the latest patch from Carl. don't get it - why should we pay cost for creating thread
when one is not required? 

> getInputSummary() to call FileSystem.getContentSummary() in parallel
> --------------------------------------------------------------------
>
>                 Key: HIVE-2051
>                 URL: https://issues.apache.org/jira/browse/HIVE-2051
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Siying Dong
>            Assignee: Siying Dong
>            Priority: Minor
>         Attachments: HIVE-2051.1.patch, HIVE-2051.2.patch, HIVE-2051.3.patch
>
>
> getInputSummary() now call FileSystem.getContentSummary() one by one, which can be extremely
slow when the number of input paths are huge. By calling those functions in parallel, we can
cut latency in most cases.

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