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From Apache Wiki <wikidi...@apache.org>
Subject [Lucene-hadoop Wiki] Update of "Hbase/HbaseRTDS" by johanoskarsson
Date Mon, 03 Dec 2007 12:46:27 GMT
Dear Wiki user,

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

The following page has been changed by johanoskarsson:
http://wiki.apache.org/lucene-hadoop/Hbase/HbaseRTDS

------------------------------------------------------------------------------
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  = Validating the Real-time Performance of Hbase =
  
+ I've done some very simple benchmarks that seeks to find out if hbase is suitable for real
time data serving.
+ 
+ All benchmarks run with hadoop 0.15.1, 3 datanodes and regionservers. One of them served
as master (not ideal, I know).
+ 894621 values were put in the table column retrieved. One separate machine acted as the
client, it picked a random key known to be in the dataset and requested that.
+ 
+ The results are very similar to just reading values from a MapFile on the HDFS, suggesting
that the performance bottlenecks are not in HBase itself.
+ Not sure why the requests / second graph is so jumpy.
+ 
  [http://wiki.apache.org/lucene-hadoop-data/attachments/Hbase(2f)HbaseRTDS/attachments/C__Documents%20and%20Settings_Administrator_Desktop_hbase-3n-50t-125sl-duration.gif]
+ X-axis: time. Y-axis: duration per request in ms.
  
  [http://wiki.apache.org/lucene-hadoop-data/attachments/Hbase(2f)HbaseRTDS/attachments/C__Documents%20and%20Settings_Administrator_Desktop_hbase-3n-50t-125sl-reqs.gif]
+ X-axis: time. Y-axis: requests/second
  
  [http://wiki.apache.org/lucene-hadoop-data/attachments/Hbase(2f)HbaseRTDS/attachments/C__Documents%20and%20Settings_Administrator_Desktop_hbase-3n-50t-250sl-duration.gif]
+ X-axis: time. Y-axis: duration per request in ms.
  
  [http://wiki.apache.org/lucene-hadoop-data/attachments/Hbase(2f)HbaseRTDS/attachments/C__Documents%20and%20Settings_Administrator_Desktop_hbase-3n-50t-250sl-reqs.gif]
+ X-axis: time. Y-axis: requests/second
  
  [http://wiki.apache.org/lucene-hadoop-data/attachments/Hbase(2f)HbaseRTDS/attachments/C__Documents%20and%20Settings_Administrator_Desktop_hbase-3n-50t-80sl-duration.gif]
+ X-axis: time. Y-axis: duration per request in ms.
  
  [http://wiki.apache.org/lucene-hadoop-data/attachments/Hbase(2f)HbaseRTDS/attachments/C__Documents%20and%20Settings_Administrator_Desktop_hbase-3n-50t-80sl-reqs.gif]
+ X-axis: time. Y-axis: requests/second
  
  = Real-time Query Processing With Hbase Shell =
  

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