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MapReduce >> mail # user >> Migrating from Legacy to Hadoop.

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Re: Migrating from Legacy to Hadoop.
Hi Bertrand,

Thanks for your reply.

As per my understanding mentioned open source does not support
procedure language(PL) flexibility. Right?

I was looking for some other alternatives so that we can migrate our
existing code rather then creating java UDF etc. So handling complex
ETL business logic is still very difficult on Hadoop in terms of
coding, QA and performance?

On 10/8/13, Bertrand Dechoux <[EMAIL PROTECTED]> wrote:
> open source : Pig, Hive, Cascading ...
> other : Talend ...
> Is that the answer you are expecting or are you looking for something more
> specific?
> Regards
> Bertrand
> On Tue, Oct 8, 2013 at 5:47 PM, Jitendra Yadav
>> Hi All,
>> We are planning to consolidate our 3 existing warehouse databases to
>> Hadoop cluster, In our testing phase we have designed the target
>> environment and transferred the data from source to target (not in
>> sync but almost completed ). These legacy systems were using
>> traditional ETL/replication  mechanism like Golden gate, Loaders,
>> PL/SQL language etc., FYI we are using 80%  PL/SQL code and SQL server
>> packages in current environment, however we have re-writing some of
>> ETL jobs through java and python MR but looking for some more and easy
>> alternatives.
>> What is best approach we should follow to complete this process? while
>> suggesting please take effort and timing in consideration( if
>> possible).
>> Please guide.
>> Regards
>> Jitendra