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From Apache Wiki <wikidi...@apache.org>
Subject [Cassandra Wiki] Trivial Update of "FileFormatDesignDoc" by StuHood
Date Tue, 03 May 2011 19:58:38 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Cassandra Wiki" for change notification.

The "FileFormatDesignDoc" page has been changed by StuHood.
http://wiki.apache.org/cassandra/FileFormatDesignDoc?action=diff&rev1=38&rev2=39

--------------------------------------------------

  
  This example adds type information and range metadata for values at level "name1" between
'havarti' and 'muenster': the chunk for the "name1" level stores a pair of tuples for the
'cheese' parent. The end result is that the span stores a tombstone from ('cheese', 'havarti',
<empty>) to ('cheese', 'muenster', null), where <empty> is the smallest value,
and null is the largest value.
  
- In cases where parents are too wide to fit in a single span, range metadata is also used
to indicate that only a portion of a parent is present in a given span. If a parent value
in a span ends while a range is still open, then it will continue in further spans.
+ In cases where parents are too wide to fit in a single span, range metadata is also used
to indicate that only a portion of a parent is present in a given span. If a span ends with
a non-null range_end marker, then it should be assumed that more spans are present.
  
  === Value Metadata ===
  

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