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SSS Mapreduce Programming Guide - Key format
en, ja
Updated Feb 27, 2013 by tatsuhik...@gmail.com

Key format

When SSS Mapreduce writes the key to key/value store, SSS Mapreduce appends management information to key. The format of the management information is called "Key format".

There are following three as "Key format".

  • userkey
  • thread
  • order

The change of "Key format" may be change the performance of writing. By default, thread is used. When you want change "Key format", specify "Key format" to the argument of GroupID#createRandom method.

static GroupID createRandom(KeyFormat keyformat)
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