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Cassandra has Pig support for loading and storing starting with Cassandra 0.7. It requires Pig 0.7+. The CassandraStorage class (for loading and storing) is found in the Cassandra src and it's currently in a contrib module (http://cassandra.apache.org/download/^{Image Removed}). Details are found in the readme there. More hadoop support details are found here: http://wiki.apache.org/cassandra/HadoopSupport^{Image Removed}. A project that looks to ease integration between the two is Pygmalion: https://github.com/jeromatron/pygmalion/^{Image Removed}.

Pig and HBase

In Pig 0.6 and before, the built in HBaseStorage can be used to load data from Hbase. Work is ongoing to enhance this loader and make it a storage function also. See http://issues.apache.org/jira/browse/PIG-1205^{Image Removed}

Pig and Hive RCFiles

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The Pig LoadFunc for Voldemort.
See http://github.com/rsumbaly/voldemort/blob/hadoop/contrib/hadoop/src/java/voldemort/hadoop/pig/VoldemortStore.java^{Image Removed}

Pig and Avro

AvroStorage, an Avro LoadFunc/StoreFunc in piggybank. See https://issues.apache.org/jira/browse/PIG-1748^{Image Removed}