Apologies if this question is poorly worded: I am embarking on a large scale machine learning project and I don\'t like programming in Java. I love writing programs in Python. I have heard good things
I have a Pig job which analyzes log files and write summary output to S3. Instead of writing the output to S3, I want to convert it to a JSON payload and POST it to a URL.
I want to order the tuples 开发者_Go百科using my own comparator class. If I run a query like say \" B = ORDER A by $0,$1 \"
I\'ve spent a few hours getting acclimated, but I w开发者_C百科ant to find some other ways to practice.The book Programming Pig is available online, and has a great chapter on writing UDFs:
I have a query in SQL that I\'m trying to translate into Pig Latin (for use on a Hadoop cluster).Most of the time I have no problem moving the queries over to Pig, but I\'ve encountered something I ca
I wan开发者_开发百科t to be able to do a standard diff on two large files. I\'ve got something that will work but it\'s not nearly as quick as diff on the command line.
I\'m using Pig on Amazon\'s Elastic Map-Reduce to do batch analytics.My input files are on S3 and contain events that are represented by one JSON dictionary per line.I use the elephantbird JsonLoader
As I\'ve noted previously, Pig doesn\'t cope well with empty (0-byte) files. U开发者_JAVA技巧nfortunately, there are lots of ways that these files can be created (even within Hadoop utilitities).
I would like to know how to run Pig queries stored in Hive format. I have configured Hive to store compressed data (using this tutorial http://wiki.apache.org/hadoop/Hive/CompressedStorage).
I have following tuple H1 and I want to strsplit its $0 into tuple.However Ialways get an error message:
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