Hive/HivePlugins - Hadoop Wiki
creating custom UDFs First, you need to create a new class that extends UDF, with one or more methods named evaluate. package com.example.hive.udf; import org.apache.hadoop.hive.ql.exec.UDF; import org.apache.hadoop.io.Text; public final class Lower extends UDF { public Text evaluate(final Text s) { if (s == null) { return null; } return new Text(s.toString().toLowerCase()); } }(Note that there's
DebianPackaging - Cassandra Wiki
Official Package To Install On Debian(tm) (not a product of Debian(tm)) Add the following lines to /etc/apt/sources.list: deb http://www.apache.org/dist/cassandra/debian 30x main deb-src http://www.apache.org/dist/cassandra/debian 30x mainYou will want to replace 30x by the series you want to use: 22x for the 2.2.x series, 21x for the 2.1.x series, etc... You will not automatically get major versi
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How_to_replicate_a_database - Couchdb Wiki
