About mhdeshmukh22

mhdeshmukh22 · ‎12-11-2016

Thanks @Kuldeep Kulkarni This has cleared some doubts about how Hadoop services auto-login even though initial user TGT shows expired.

mhdeshmukh22 · ‎07-08-2016

mhdeshmukh22 · ‎03-26-2016

closing the Question with the Kuldeep's suggested link https://hive.apache.org/javadocs/r0.10.0/api/org/apache/hadoop/hive/ql/ppd/PredicatePushDown.html

mhdeshmukh22 · ‎03-24-2016

I wanted to understand the concept for vectorization.I got it from above link.Thanks

mhdeshmukh22 · ‎03-24-2016

mhdeshmukh22 · ‎03-24-2016

@ thanks Eyad

mhdeshmukh22 · ‎03-23-2016

mhdeshmukh22 · ‎03-23-2016

No, I was looking for concept of Predicate Pushdown and how it works.

mhdeshmukh22 · ‎03-23-2016

@Kuldeep Kulkarni thanks

mhdeshmukh22 · ‎03-22-2016

mhdeshmukh22 · ‎03-22-2016

The command set hive.enforce.bucketing = true; allows the correct number of reducers and the cluster by column to be automatically selected based on the table. Otherwise, you would need to set the number of reducers to be the same as the number of buckets.

mhdeshmukh22 · ‎03-22-2016

@ thanks Kazan, there is bit correction with your ans,The command set hive.enforce.bucketing = true; allows the correct number of reducers and the cluster by column to be automatically selected based on the table. Otherwise, you would need to set the number of reducers to be the same as the number of buckets.

mhdeshmukh22 · ‎03-22-2016

mhdeshmukh22 · ‎03-20-2016

thanks @Benjamin Leonhardi

mhdeshmukh22 · ‎03-20-2016

thanks @Divakar Annapureddy

mhdeshmukh22 · ‎03-20-2016

Thanks @Neeraj Sabharwal,But still i have one question,As per above example the table page_view is partitioned by dt and country columns,means the table has now partitions based on these 2 columns.so for bucketing case,where does these 32 buckets gets created in each partition? please clear this doubt. Thanks!!!

mhdeshmukh22 · ‎03-18-2016

mhdeshmukh22 · ‎03-16-2016

Thanks @Benjamin

mhdeshmukh22 · ‎03-16-2016

@Benjamin Leonhardi , Thanks for your ans,Finally it means which one is better is depends on small dataset size only.Is it right?

mhdeshmukh22 · ‎03-16-2016

Please post examples if have any.

mhdeshmukh22 · ‎03-16-2016

mhdeshmukh22 · ‎03-14-2016

thanks@Artem

mhdeshmukh22 · ‎03-14-2016

thanks @Benjamin Leonhardi

mhdeshmukh22 · ‎03-13-2016

mhdeshmukh22 · ‎03-13-2016

While using Order By operator in Pig Latin,If we have not mentioned ASC or DESC , by default it sorts by ASC order. ex- grunt >OrderedData = order studentDetails by age; This will sort by default in ASC order. Otherwise We can mention here as below: OrderedData = order studentDetails by age DESC; OrderedData = order studentDetails by age ASC;

mhdeshmukh22 · ‎03-12-2016

thanks @Artem Ervits

mhdeshmukh22 · ‎03-12-2016

mhdeshmukh22 · ‎03-12-2016

mhdeshmukh22 · ‎03-03-2016

thanks karthik

mhdeshmukh22 · ‎03-03-2016

It's For Pig

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Date Registered	‎02-28-2016 04:55 PM
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Re: How Predicate Pushdown works for any specific ...

Re: What is the term 'Vectorization' used while up...

What is the term 'Vectorization' used while update...

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How to Specify the multiple delimiters in hive tab...

Re: How Predicate Pushdown works for any specific ...

Re: How Predicate Pushdown works for any specific ...

How Predicate Pushdown works for any specific quer...

Re: Is there any relation of no of buckets with nu...

Re: Is there any relation of no of buckets with nu...

Is there any relation of no of buckets with number...

Re: what is basic difference between Partitioning ...

Re: what is basic difference between Partitioning ...

Re: what is basic difference between Partitioning ...

what is basic difference between Partitioning and ...

Re: How the Replicated join gives better performan...

Re: How the Replicated join gives better performan...

Re: How the Replicated join gives better performan...

How the Replicated join gives better performance a...

Re: We can set the number of reduce tasks for the ...

Re: We can set the number of reduce tasks for the ...

We can set the number of reduce tasks for the MapR...

Order by Operator in Pig

Re: When i am using cmd, grunt> explain student_r...

When i am using cmd, grunt> explain student_relat...

how to handle null or empty scenarios in foreach i...

Re: what is the difference between exec and the ru...

Re: what is the difference between exec and the ru...