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The "Hive/IndexDev/Bitmap" page has been changed by MarquisWang.
http://wiki.apache.org/hadoop/Hive/IndexDev/Bitmap?action=diff&rev1=2&rev2=3

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  For the second iteration, the first entry will be:
  
- 
{{https://issues.apache.org/jira/secure/attachment/12460083/bitmap_index_2.png}}
+ 
{{https://issues.apache.org/jira/secure/attachment/12460124/bitmap_index_2.png}}
  
  This one uses 1-byte array entries, so each value in the array stores 8 rows. 
If an entry is 0x00 or 0xFF, it represents 1 or more consecutive bytes of 
zeros, (in this case 5 and 4, respectively)
  

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