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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4824) make TestWebHCatE2e run w/o requiring installing external hadoop
Date Mon, 26 Aug 2013 16:50:54 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13750226#comment-13750226
] 

Eugene Koifman commented on HIVE-4824:
--------------------------------------

Another possibility is to just call HCatCli directly from WebHCat - that would simplify the
architecure and improve perf of DDL ops dramatically.
One possible issue here is concurrency - hive code is not completely thread safe.  We could
use a new ClassLoader for each call to HCatCli - this would work around concurrency issues
and will still be a good step forward.
                
> make TestWebHCatE2e run w/o requiring installing external hadoop
> ----------------------------------------------------------------
>
>                 Key: HIVE-4824
>                 URL: https://issues.apache.org/jira/browse/HIVE-4824
>             Project: Hive
>          Issue Type: Bug
>          Components: HCatalog
>    Affects Versions: 0.12.0
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>
> Currently WebHCat will use hive/build/dist/hcatalog/bin/hcat to execute DDL commands,
which in turn uses Hadoop Jar command.
> This in turn requires that HADOOP_HOME env var be defined and point to an existing Hadoop
install.  
> Need to see we can apply hive/testutils/hadoop idea here to make WebHCat not depend on
external hadoop.
> This will make Unit tests better/easier to write and make dev/test cycle simpler.

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