Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
Pig >> mail # user >> run pig explain command over the entire script in java

Copy link to this message
Re: run pig explain command over the entire script in java
I guess I'm confused at what you want then.

So we have a script:

a = ..
b = ...
c = ..

my impression was that you essentially wanted to print "explain a; explain
b; explain c;" is this not what you mean/
2013/2/18 Petar Jovanovic <[EMAIL PROTECTED]>

> But pig already has this, it's jut that the java API seems not to have it.
> The point would be to have the execution flow from the entire script.
> Indeed, the output is not exactly the same if the explain is called over
> the entire script than if it is called for each query (alias).
> If from the shell we execute command
> $ pig -x local -e 'explain -script Temp1/TPC_test.pig -out
> explain-out9.txt'
> it will not give the same output as if we did it for each operation
> separately.
> On 2/18/2013 7:04 PM, Jonathan Coveney wrote:
>> Hacky way: grep for "^\S =", pull out the names, and then do the explains.
>> Why is doing the progressive explains useful? it wouldn't be too hard to
>> build this into pig but the results would be pretty unwieldy, it'd be
>> really big, and pretty redundant.
>> 2013/2/18 Petar Jovanovic <[EMAIL PROTECTED]>
>>  Hi,
>>> I am trying to find the way to run the explain command over the entire
>>> pig
>>> script in java. I was using PigServer but it offers only to do explain
>>> over
>>> the single query (alias) not the entire script. Is there a way to do
>>> something like:
>>> $ pig -x local -e 'explain -script Temp1/TPC_test.pig -out
>>> explain-out9.txt'
>>> but from my Java code?
>>> Thanks.