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From "Edward Capriolo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3127) Don’t pass–hconf values as command line arguments to child JVM to avoid command line exceeding char limit on windows
Date Sun, 17 Jun 2012 17:44:43 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13393576#comment-13393576
] 

Edward Capriolo commented on HIVE-3127:
---------------------------------------

Another interesting piece. If we can write the entire configuration to a file it might make
more sense to deprecate the passing individual elements entirely.
                
> Don’t pass–hconf values as command line arguments to child JVM to avoid command line
exceeding char limit on windows
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-3127
>                 URL: https://issues.apache.org/jira/browse/HIVE-3127
>             Project: Hive
>          Issue Type: Bug
>          Components: Configuration, Windows
>    Affects Versions: 0.9.0, 0.10.0, 0.9.1
>            Reporter: Kanna Karanam
>              Labels: Windows
>             Fix For: 0.10.0
>
>         Attachments: HIVE-3127.1.patch.txt
>
>
> The maximum length of the DOS command string is 8191 characters (in Windows latest versions
http://support.microsoft.com/kb/830473). This limit will be exceeded easily when it appends
individual –hconf values to the command string. To work around this problem, Write all changed
hconf values to a temp file and pass the temp file path to the child jvm to read and initialize
the -hconf parameters from file.

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