Mohan, I think that depends on your use case and how you feel with the technologies, I am not a pig expert but as Bill said, Hive and Pig are ways to do easier the way to process the data, you can write mapreduce to do any hive or pig task and more , it's definitely more versatile but more hard to use too. Because of that, I prefer to said that we should use the correct tool for the correct problem. If you feel great with sql, your data can be mapped to hive schema and your process could be solved with sql, hive could be a great tool, If you feel better with scripting PIG could be a great tool, in other case, if you need to do more complex processing, map-reducer, spark or other could be greater.
Gabriel. 2014-12-03 23:02 GMT-03:00 Mohan Krishna <mohan.25fe...@gmail.com>: > Thankyou Gabriel > Your answers are very useful to me. Thanks a lot > > > > On Thu, Dec 4, 2014 at 7:29 AM, Bill Busch <bigdat...@outlook.com> wrote: > >> MapReduce can be used for both structure and unstructured data. Hive is >> a storage and retrieval mechanism (e.g. database). The trouble with RDBMS >> is that you either have to parse the unstructured data into a structured >> row /column format OR store it as an object. There are issues both >> performance and semantically . Hence, there is a whole world of NoSQL >> databases out there that have been developed that are not row-column >> structured. These databases can handle more schema-less/unstructured >> objects and will allow you to more eloquently manipulate your information. >> I would check out the Wikipedia page on NoSQL databases and focus on >> Key - Value, Columnar, or Document databases. >> >> ------------------------------ >> Date: Thu, 4 Dec 2014 07:06:16 +0530 >> Subject: Re: Question >> From: mohan.25fe...@gmail.com >> To: user@hive.apache.org >> >> >> Thanks Gabriel for the prompt response >> >> I see in online blogs saying MapReduce for Unstructured Data , Pig for >> Semi Sturctured Data and Hive is only for Structured Data. Can you please >> justify this? >> >> >> Thanks in advance >> >> >> >> On Thu, Dec 4, 2014 at 6:56 AM, Gabriel Eisbruch < >> gabrieleisbr...@gmail.com> wrote: >> >> Hi Mohan, >> We are using hive for unstructured (or semi structured data) using map >> columns, for example, we use for fixed data standard columns and form >> dynamic data map columns. >> >> Gabriel. >> >> 2014-12-03 22:19 GMT-03:00 Mohan Krishna <mohan.25fe...@gmail.com>: >> >> Hive is for only structured data or it handles Unstructured data as well >> ? >> >> >> >> >
