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From Apache Wiki <wikidi...@apache.org>
Subject [Hama Wiki] Trivial Update of "Architecture" by udanax
Date Tue, 31 Mar 2009 02:03:15 GMT
Dear Wiki user,

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The following page has been changed by udanax:
http://wiki.apache.org/hama/Architecture

------------------------------------------------------------------------------
  -- ''Just a thought, considering the depleted activity in HBase should we not explore ways
to avoid HBase ? --Prasen ''
   -- ''Hbase seems activity at this time, However Yes. We should think about it. --Edward
''
  
- == Physical Structure ==
+ == Structure Considerations ==
+ 
+ A lot of columns causes huge storage expense. So I propose that we store a piece of Vector
to each cell. 
+ 
+ {{{
+ DenseMatrix Table scheme:
+ 
+        column:                               metadata:
+ ===============================================================================
+ row1   column:startLocation  <sub-vector1>   metadata:subVectorInterval <1000>
+        column:startLocation  <sub-vector2>   metadata:matrixType <DenseMatrix>
+        column:startLocation  <sub-vector3>   ...
+        ...
+ row2
+ ...
+ }}}
+ 
+ {{{
+ SparseMatrix Table scheme:
+ 
+        column:                               metadata:
+ ===============================================================================
+ row1   column:column1  <entry1>   metadata:matrixType <SparseMatrix>
+        column:column2  <entry2>   ...
+        column:column3  <entry3>   
+        ...
+ row2
+ ...
+ }}}
  
  = Perform matrix operations =
  

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