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From "Edward Capriolo (JIRA)" <>
Subject [jira] Commented: (HIVE-959) Hive to use new interfaces in Hadoop 0.20
Date Tue, 15 Dec 2009 15:58:18 GMT


Edward Capriolo commented on HIVE-959:

>>But should hive compatibility with older versions of hadoop be maintained ? 

I think definitely a big yes. I do not think we should abandon older versions of Hadoop for
the newest version, which is not even 100% complete yet. By 100% I mean not everything in
the mapred packages have been fully ported to the mapreduce packages yet e.g. Is MultiFileInput
format committed yet?

Currently 18.3 is still considered the stable branch. I do not think we should abandon it
for 0.20. Hopefully we should be able to auto detect the version and either build shims or
patch the source pre-compile, or branch. 

> Hive to use new interfaces in Hadoop 0.20
> -----------------------------------------
>                 Key: HIVE-959
>                 URL:
>             Project: Hadoop Hive
>          Issue Type: Improvement
>    Affects Versions: 0.5.0
>            Reporter: Zheng Shao
> Hadoop 0.20 has a lot of new interfaces including MapReduce etc.Hive should move to the
new interface.
> Hive won't be compatible with earlier hadoop versions after this change, so we might
want to wait till hive 0.5 is branched out first.

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