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Hive >> mail # user >> Hive 0.7 use the old mapred API


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java8964 java8964 2012-12-03, 15:42
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Re: Hive 0.7 use the old mapred API
Yong,
In my opinion, #2 wouldn't be that hard to do.

Of course, upgrading to the new API (albeit by updating Hive) would the
right thing to do long term.

Mark

On Mon, Dec 3, 2012 at 7:42 AM, java8964 java8964 <[EMAIL PROTECTED]>wrote:

>  Hi,
>
> Our company current is using CDH3 release, which comes with Hive 0.7.1.
>
> Right now, I have the data coming from another team, which also provides
> the custom InputFormat and RecorderReader, but using the new mapreduce API.
>
> I am trying to build a hive table on these data, and hope I can reuse the
> existing InputFormat. But I got a problem, that in HIVE 0.7.x, only old API
> is supported.
>
> I have 3 options now:
>
> 1) Upgrade whole hadoop system,which is not a real option as right now.
> 2) Ask the other team to provide the custom InputFormat/RecorderReader
> under old mapred API. I am working on this, but not sure if it is possible
> or how long.
> 3) Writable a wrapper class, providing old API based on the new API class.
> My question is, is the 3rd optional valid? Does anyone do
> the similar things before?
>
>
> Thanks
>
> Yong
>
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Edward Capriolo 2012-12-04, 14:35