This page describes the Hama Shell.
Commands
Load load the matrix from the matrix file using user specified !MapReduce class. for example: hama> a = load "fileA" as Matrix using MyMapReduce.class MAP 10 REDUCE 1; hama> b = load "fileB" as Matrix using MyMapReduce.class; Add the matrix addition. such as : hama> c = a + b. Multiply the matrix multiplication. such as : hama> d = a * b. Save save the matrix as a file. such as : hama> save c as "fileC".
Grammar
<hamascript> := <expr> ";" <expr> := [<alias> "="] <baseexpr> ["MAP" <integer>] ["REDUCE" <integer>] | "SAVE" <saveexpr> <baseexpr> := <operationexpr> | "LOAD" <loadexpr> <operationexpr> := <alias> | <operationexpr> <operations> <operationexpr> | "(" <operationexpr> ")" <operations> := "+" | "-" | "*" <loadexpr> := <filename> "as" <type> ["USING" <loadclass> ["MAP" <integer>] ["REDUCE" <integer>] ] <type> := "matrix" <loadclass> := <quotedstring> <saveexpr> := <alias> "as" <filename> <filename> := <quotedstring> <quotedstring> := "'"<string>"'"
_ Still in work..._