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Posted to common-commits@hadoop.apache.org by Apache Wiki <wi...@apache.org> on 2009/01/13 16:57:17 UTC

[Hadoop Wiki] Trivial Update of "Hbase/DataModel" by JeanDanielCryans

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The following page has been changed by JeanDanielCryans:
http://wiki.apache.org/hadoop/Hbase/DataModel

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   * Timestamps
    * Max number: the maximum number of different versions a value has.
    * Time to live: versions older than specified time will be garbage collected.
+  * Block Cache : caches blocks fetched from HDFS in a LRU-style queue. Improves random read performances and is a nice feature while waiting for full in-memory storage.
  
  Still not implemented
   * In memory: all values of that family will be kept in memory.
@@ -77, +78 @@

  [[Anchor(relational)]]
  == The Source ERD ==
  
- http://www.hadoop.ca/img/db_blog.jpg
+ http://people.apache.org/~jdcryans/db_blog.jpg
  
  [[Anchor(hbaseschema)]]
  == The HBase Target Schema ==