impala aggregate functions

Creating UDF and UDAF for Impala

This entry was posted in Hadoop Impala and tagged impala impala aggregate functions impala userdefinedfunctions impalaudafs impalaudfs on June 7, 2016 by Shiva Balena

Installing the UDF Development Package


 Get the quickstart VM
 sudo yum install gcc-c++ cmake boost-devel
 sudo yum install impala-udf-devel
 download <a href="https://github.com/cloudera/impala-udf-samples/archive/master.zip" target="_blank" rel="nofollow">https://github.com/cloudera/impala-udf-samples/archive/master.zip</a> unzip above cd into ../impala-udf-samples-master
 cmake .

Get the quickstart VM

sudo yum install gcc-c++ cmake boost-devel

sudo yum install impala-udf-devel

download <a href="https://github.com/cloudera/impala-udf-samples/archive/master.zip" target="_blank" rel="nofollow">https://github.com/cloudera/impala-udf-samples/archive/master.zip</a> unzip above cd into ../impala-udf-samples-master

cmake .

The output will be like below code. [cloudera@quickstart impala-udf-samples-master]$ cmake . — The C compiler identification is GNU 4.4.7 — The CXX compiler identification is GNU 4.4.7 — Check for working C compiler: /usr/bin/cc — Check for working C compiler: /usr/bin/cc — works — Detecting C compiler ABI info — Detecting C compiler ABI info – done — Check for working CXX compiler: /usr/bin/c++ […]

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I have attended Siva’s Spark and Scala training. He is good in presentation skills and explaining technical concepts easily to everyone in the group. He is having excellent real time experience and provided enough use cases to understand each concepts. Duration of the course and time management is awesome. Happy that I found a right person on time to learn Spark. Thanks Siva!!!

Dharmeswaran ETL / Hadoop Developer Spark Nov 2016 September 21, 2017

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kalpana Bhemireddy Hadoop developer Spark jul/2016 September 26, 2016

Course content is well structured. I like Siva's explanation of topics using slide decks & virtual machine (CDH cluster) at the same time,this will help audience to learn not only theory behind a topic but also practical aspect of it. Overall, I would recommend this course.

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purushotham Sr.Software Engineer Spark August/2016 September 15, 2016

Here is 2 cents
1. Got More exercises and provide feedback. (also a final project)
2. Support (may be you need a part time person)

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Akhila Hadoop Developer Hadoop/spark September 13, 2016

Siva did an excellent job in explaining each topic patiently, gave many real-time examples
And he was really patient enough in answering each of our doubts,responds well in time when needed.
He has Immense knowledge in all the Hadoop/spark eco-system tools. Never felt bored in his classes he makes the classes so interactive
He has an excellent blog..got addicted to it.

Akhila Hadoop Developer Hadoop/spark September 13, 2016

Spark and Hadoop course content is really apt for the beginners. Concept articulation gives clarity on the subject and recording are quite handy for reference. my request is to start an advance level course where it takes very close to real time feel

Ramesh Pallothu Senior Architect Spark Course September 13, 2016

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