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Posted to commits@cassandra.apache.org by Apache Wiki <wi...@apache.org> on 2013/11/15 01:45:30 UTC

[Cassandra Wiki] Update of "SecondaryIndexes" by GehrigKunz

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The "SecondaryIndexes" page has been changed by GehrigKunz:
https://wiki.apache.org/cassandra/SecondaryIndexes?action=diff&rev1=6&rev2=7

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   * Q: How does choice of Consistency Level affect cluster availability when using secondary indexes?
     A: Because secondary indexes are distributed, you must have CL nodes available for '''all''' token ranges in the cluster in order to complete a query. For example, with RF = 3, when two out of three consecutive nodes in the ring are unavailable, '''all''' secondary index queries at CL = QUORUM will fail, however secondary index queries at CL = ONE will succeed. This is true regardless of cluster size.
  
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