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From Andrew Purtell <apurt...@apache.org>
Subject Re: [DISCUSS] Apache Hadoop 1.0?
Date Thu, 17 Nov 2011 21:07:43 GMT
> From: Arun C Murthy <acm@hortonworks.com>

> Now, a downstream project such as HBase, Hive or Pig isn't the 'normal 
> end-user application'. These projects can choose to use 
> undocumented/non-public (e.g. LimitedPrivate) apis and we are committed to 
> working with them to ensure a smooth transition.
> I don't know which are the ones in 'every single downstream 
> component' - care to enumerate?
> The ones I'm aware of, which have since been fixed are:
> https://issues.apache.org/jira/browse/HBASE-4510 -> 
> https://issues.apache.org/jira/browse/HDFS-2412 (we fixed the internal HDFS apis 
> so that HBase can continue to use them)
> https://issues.apache.org/jira/browse/PIG-2125 -> 
> https://issues.apache.org/jira/browse/MAPREDUCE-3138 (we fixed MR to allow apps 
> deal with inconsistency in 'new' MR apis which changed in 0.21).
> I'm not aware of anything else - what else do you see?
> As a result, the downstream projects ensure their own end-users and applications 
> (HBase apps, Pig scripts, Hive queries) etc. do NOT see any incompatibilities.

In addition, MAPREDUCE-3169. I had to pull out a bunch of HBase unit tests today to get 0.92
compiling on 0.23.

   - Andy

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