Both Pig and Hive have an 'explain plan' command that prints a schematic
version. This might make it easier to see what M/R algorithms are used.
Mostly the data goes through single-threaded transforms inside a mapper
or reducer.
https://cwiki.apache.org/Hive/languagemanual-explain.html
On 06/16/2013 09:17 AM, Edward Capriolo wrote:
Hive serializes the entire plan into an XML file if you set the log 4j
settings to debug you should get the locations to the files
itgenerates before launching the job.
On Sun, Jun 16, 2013 at 11:08 AM, Harsh J <[email protected]
<mailto:[email protected]>> wrote:
This is a question for the Hive/Pig lists to answer best.
Note though that they only compile a plan, not the code. The code is
available already, the compiled plan just structures the execution
flow. If you take a look at the sources, you'll find the bits and
pieces that get linked together depending on the operation.
On Sun, Jun 16, 2013 at 10:15 AM, 王洪军 <[email protected]
<mailto:[email protected]>> wrote:
> hi,all
>
> how to get the mapreduce code which was pig/hive script
translated to?
>
> Best regards,
> wanghj
>
--
Harsh J
