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From hongbin ma <mahong...@apache.org>
Subject Re: TableInputFormatBase deprecated issue
Date Wed, 25 Mar 2015 04:43:47 GMT
​thanks Elliott,
it' very clear explanation​

On Wed, Mar 25, 2015 at 12:35 PM, Elliott Clark <eclark@apache.org> wrote:

> All of the code in mapred was considered deprecated because Hadoop had been
> saying for a while that org.apache.hadoo.mapreduce (as opposed to
> org.apache.hadoop.mapred) would be best supported MR framework. So HBase
> wanted to push users to use that set of classes.
>
> However it's become pretty apparent that way too many applications have
> been built on both of the different sets of classes. Hence Hadoop will have
> to support mapred and mapreduce fully. Hence HBase will support both, as we
> want users to have the best options available.
>
> If it were me creating new code I would still choose
>
> https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/TableInputFormat.java
> over
>
> https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/mapred/TableInputFormat.java
>
>
> On Tue, Mar 24, 2015 at 8:37 PM, hongbin ma <mahongbin@apache.org> wrote:
>
> > hi, all
> >
> > I found this class TableInputFormatBase deprecated in 0.98, but
> > un-deprecated in https://issues.apache.org/jira/browse/HBASE-11178.
> >
> > I'm wondering why is the change?
> > Does it mean we nearly discarded its support to mapred over hbase?
> >
> > I'm thinking about using hbase as my MR's input and sink,
> > please let me know if it's feasible to do it.
> >
> > --
> > Regards,
> >
> > *Bin Mahone | 马洪宾*
> > Apache Kylin: http://kylin.io
> > Github: https://github.com/binmahone
> >
>



-- 
Regards,

*Bin Mahone | 马洪宾*
Apache Kylin: http://kylin.io
Github: https://github.com/binmahone

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