squarecog.wordpress.com
New Features in Apache Pig 0.8 | SquareCog's SquareBlog
https://squarecog.wordpress.com/2010/12/19/new-features-in-apache-pig-0-8
Skip to search - Accesskey = s. New Features in Apache Pig 0.8. By squarecog on December 19, 2010. The Pig 0.8 release includes a large number of bug fixes and optimizations, but at the core it is a feature release. It’s been in the works for almost a full year (most of the work on 0.7 was completed by January of 2009, although it took a while to actually get the release out), and the amount of time spent on 0.8 really shows. Support for UDFs in scripting languages. This is the outcome of PIG-928. And th...
squarecog.wordpress.com
Incrementing Hadoop Counters in Apache Pig | SquareCog's SquareBlog
https://squarecog.wordpress.com/2010/12/24/incrementing-hadoop-counters-in-apache-pig
Skip to search - Accesskey = s. Incrementing Hadoop Counters in Apache Pig. By squarecog on December 24, 2010. Information about incrementing Hadoop counters from inside Pig UDFs is not currently well-documented, judging by the user list traffic, so this is a brief note showing how to do that. And some guidelines for appropriate usage in “Apache Hadoop Best Practices and Anti-Patterns”. Pig 06 and before. Reporter reporter = PigHadoopLogger.getInstance().getReporter() if (reporter! Unfortunately I don...
squarecog.wordpress.com
Building an Inverted Index with Hadoop and Pig | SquareCog's SquareBlog
https://squarecog.wordpress.com/2009/01/17/building-an-inverted-index-with-hadoop-and-pig
Skip to search - Accesskey = s. Building an Inverted Index with Hadoop and Pig. By squarecog on January 17, 2009. For some reason, this post appears to be pretty popular. Here's the thing. This was the first thing I wrote when learning Pig. Literally - I wrote it down the evening I sat down to play with Pig's syntax. You wouldn't really ever construct an inverted index this way. The point was that you can, not that you should. It is, however, kind of neat. There are several other projects with similar go...
squarecog.wordpress.com
SquareCog's SquareBlog | Page 2
https://squarecog.wordpress.com/page/2
Skip to search - Accesskey = s. Great Database Performance Presentations and Videos. By squarecog on September 11, 2009. Percona is posting presentations from their Performance Conference at this blog: http:/ www.percona.tv/. Both the videos and the PPTs. There is some great info in there, not just on MySQL, but also on Hive, PostgreSQL, performance monitoring and more. Well worth checking out. Tagged with: presentations; rdbms. Jeeves and Diller — separated at birth? By squarecog on April 20, 2009.
squarecog.wordpress.com
Pig Variables and Semicolons | SquareCog's SquareBlog
https://squarecog.wordpress.com/2011/08/24/142
Skip to search - Accesskey = s. Pig Variables and Semicolons. By squarecog on August 24, 2011. Pay attention to where you put your semicolons lest they become part of the value! Default QUOTED '20090101';. Default UNQUOTED $QUOTED;. L = load '/logs/$QUOTED';. L = load '/logs/$UNQUOTED';. Pig -x local -r script.pig. L = load '/logs/20090101';. L = load '/logs/20090101;';. Laquo; Hadoop requires stable hashCode() implementations. Pig trick to register latest version of jar from HDFS. Enter your comment here.
squarecog.wordpress.com
GROUP operator in Apache Pig | SquareCog's SquareBlog
https://squarecog.wordpress.com/2010/05/11/group-operator-in-apache-pig
Skip to search - Accesskey = s. GROUP operator in Apache Pig. By squarecog on May 11, 2010. I’ve been doing a fair amount of helping people get started with Apache Pig. One common stumbling block is the GROUP operator. Although familiar, as it serves a similar function to SQL’s GROUP operator, it is just different enough in the Pig Latin language to be confusing. Hopefully this brief post will shed some light on what exactly is going on. Let us start by loading up some data:. Of all the rows in the origi...
squarecog.wordpress.com
Splitting words joined into a single string (compound-splitter) | SquareCog's SquareBlog
https://squarecog.wordpress.com/2008/10/19/splitting-words-joined-into-a-single-string
Skip to search - Accesskey = s. Splitting words joined into a single string (compound-splitter). By squarecog on October 19, 2008. Someone posted a question on StackOverflow.com. Asking how to split words that have been concatenated together (likethis). This sounded like fun, so I spent an hour or two putting together a solution. But for a quick and dirty “my evening with Perl” approach, read on. A) produce all valid combinations. B) rank them somehow. Let’s step through this at a leisurely pace. Nothing...
kinnejeff.com
Theory Links
http://www.kinnejeff.com/theory-links.html
Lance Fortnow and Bill Gasarch. List from CS theory stack exchange. Theory of Computing: Lens of the Sciences. Simons' Fdn. Visions. CS Theory Stack Exchange. Algorithms from the book. A Computational Introduction to Number Theory (Shoup). Conference on Computational Complexity (CCC). FOCS, STOC, CCC, RANDOM, STACS, ICALP, . SIGACT News Complexity Theory Column. BEATCS Complexity Theory Column. Center for Computational Intractability. Lecture Notes, Draft Texts, etc.:. Complexity Theory (Van Melkebeek).
hpcdan.org
Reed's Ruminations: A Blog by Dan Reed
http://www.hpcdan.org/reeds_ruminations
Reed's Ruminations: A Blog by Dan Reed. This is a personal blog updated regularly by Dr. Daniel Reed, Vice President for Research and Economic Development at the University of Iowa. These musing on the current and future state of technology, scientific research and innovation are my own and don’t necessarily represent the University of Iowa's positions, strategies or opinions. August 02, 2016. Remembering Joel: A Teacher’s Impact. Lament about the lack of a kaboom. And Yet It Moves! I took two biology co...
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