java - Custom map-reduce input formatter for Cassandra using native protocol -


I am using Apache Cassandra (1.2) and Apache Maps- to reduce some data, minimize I currently I use org.apache.cassandra.hadoop.cql3 to CqlPagingInputFormat . This provider uses Thief to draw data It seems that the thrift is quite slow (300M records, 3 node clusters take 8 hours to read), and since the original binary protocol is present, then I wonder Has anyone used it?

Any other optimization and configuration is interested in tweaks - this is a different issue.

My questions are

  1. What is the implementation of a map - reduce the input format which directly use the Cassandra Basic Protocol?

  2. If not, to use the datestacks driver, what will be the first steps to writing your own?

    Organization>

    apache.cassandra.hadoop.cql3.CqlInputFormat org.apache.cassandra.hadoop.cql3.CqlRecordReader org.apache.cassandra.hadoop.cql3.CqlConfigHelper

    Example of / Word code code in hasoop_cql3_word_count These classes are updated to use.

    It has been started

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