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HBase >> mail # dev >> disk seek in range search


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disk seek in range search
Dear fellow HBase developers,

Could someone educate me and let me know how to figure out the number of
disk seeks involved in a range search (startRow to endRow specified in
Scan). Also, could anyone give me the details of all the steps involved once
the Scan for range retrieval is called? I know somehow it needs to figure
out the regionservers used in hosting the rows but I still don't have a
clear understanding the whole steps involved :( :( Also, there is a data
index block in HFile, I was wondering how the index block is utilized in
figuring out the location of all the rows.

Thank you so much for satisfying my curiosity :)

Have a good weekend and enjoy :)

Wei Shung
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Jean-Daniel Cryans 2011-03-28, 16:23
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Weishung Chung 2011-03-28, 16:52
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Jean-Daniel Cryans 2011-03-28, 17:00