AmazonS3 - Hadoop Wiki
S3 Support in Apache Hadoop Apache Hadoop ships with a connector to S3 called "S3A", with the url prefix "s3a:"; its previous connectors "s3", and "s3n" are deprecated and/or deleted from recent Hadoop versions. Consult the Latest Hadoop documentation for the specifics on using any the S3A connector. For Hadoop 2.x releases, the latest troubleshooting documentation. For Hadoop 3.x releases, the la
FunctionQuery - Solr Wiki
FunctionQuery allows one to use the actual value of a field and functions of those fields in a relevancy score. What is a Function? A function can be: A Constant (numeric or string literal) - See "constant" and "literal" below. A Field - See "fieldvalue" below. Also see notes later on multivalued/vector fields. Another Function Solr4.0 A parameter substitution: $arg, where arg is another function
Hive/StatisticsAndDataMining - Hadoop Wiki
Statistics and Data Mining in Hive This page is the secondary documentation for the slightly more advanced statistical and data mining functions that are being integrated into Hive, and especially the functions that warrant more than one-line descriptions. ngrams() and context_ngrams(): N-gram frequency estimation N-grams are subsequences of length N drawn from a longer sequence. The purpose of t
RunningNutchAndSolr - Nutch Wiki
New in Nutch 1.0-dev Please note that in the nightly version of Apache Nutch there is now a Solr integration embedded so you can start to use a lot easier. Just download a nightly version from http://hudson.zones.apache.org/hudson/job/Nutch-trunk/. Pre Solr Nutch integration This is just a quick first pass at a guide for getting Nutch running with Solr. I'm sure there are better ways of doing som
PigPen - Pig Wiki
PigPen PigPen is an eclipse plugin that helps users create pig-scripts, test them using the example generator and then submit them to a hadoop cluster as well. Getting PigPen The PigPen plugin jar can be obtained from here. The jar can be placed in the eclipse/plugins/ folder. It is a good idea to start eclipse with a "-clean" option to ensure that the latest version of the plugins is being used.
ArticlesAndPresentations - Cassandra Wiki
Recommended starting points Introduction to Cassandra at FOSDEM 2010 (video + slides) How to set up a 4 node Cassandra cluster in under 2 minutes Cassandra by Example, an explanation of the Twissandra data model and code. A demo is up at http://twissandra.com/. Ports to Java and C# are also available. Maxim Grinev's posts on modeling basics, translating SQL concepts to Cassandra, and update idempo
SimpleFacetParameters - Solr Wiki
Solr provides a Simple Faceting toolkit which can be reused by various Request Handlers to include a "Facet counts" section within a search response. This extra section provides a breakdown or summary of the results based on some simple criteria, which can be used to help implement more advanced search interfaces. Use of faceting does not affect the results section of a search response. The Search
Hive/GettingStarted - Hadoop Wiki
DISCLAIMER: This is a prototype version of Hive and is NOT production quality. This is provided mainly as a way of illustrating the capabilities of Hive and is provided as-is. However - we are working hard to make Hive a production quality system. Hive has only been tested on unix(linux) and mac systems using Java 1.6 for now - although it may very well work on other similar platforms. It does not
Hive/HiveClient - Hadoop Wiki
This page describes the different clients supported by Hive. The command line client currently only supports an embedded server. The JDBC and thrift-java clients support both embedded and standalone servers. Clients in other languages only support standalone servers. For details about the standalone server see HiveServer. Command line Operates in embedded mode only, i.e., it needs to have access
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