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From "Ashutosh Chauhan (Updated) (JIRA)" <>
Subject [jira] [Updated] (HIVE-1444) "hdfs" is hardcoded in few places in the code which inhibits use of other file systems
Date Wed, 07 Mar 2012 00:33:58 GMT


Ashutosh Chauhan updated HIVE-1444:

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

Committed to trunk. Thanks, Ed!
> "hdfs" is hardcoded in few places in the code which inhibits use of other file systems
> --------------------------------------------------------------------------------------
>                 Key: HIVE-1444
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.3.0, 0.4.0, 0.4.1, 0.5.0, 0.6.0, 0.7.0
>         Environment: any
>            Reporter: Yuliya Feldman
>            Assignee: Edward Capriolo
>            Priority: Critical
>             Fix For: 0.9.0
>         Attachments: HIVE-1444.D1839.1.patch, hive-1444.patch.txt
> In quite a few places "hdfs" is hardcoded, which is OK for majority of the cases, except
when it is not really hdfs, but s3 or any other file system.
> The place where it really breaks is:
> in ql/src/java/org/apache/hadoop/hive/ql/parse/ :
> method: private void applyConstraints(URI fromURI, URI toURI, Tree ast, boolean isLocal)
> First few lines are check for file system:
>     if (!fromURI.getScheme().equals("file")
>         && !fromURI.getScheme().equals("hdfs")) {
>       throw new SemanticException(ErrorMsg.INVALID_PATH.getMsg(ast,
>           "only \"file\" or \"hdfs\" file systems accepted"));
>     }
> "hdfs" is hardcoded. 
> I don't think you need to have this check at all as you are checking whether filesystem
is local or not later on anyway and in regards to non locla file system - if one would be
bad one you would get problems or have it look like local before you even come to "applyConstraints"

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