Need some condition-check before matrix algebra
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Key: HAMA-153
URL: https://issues.apache.org/jira/browse/HAMA-153
Project: Hama
Issue Type: Bug
Components: implementation
Reporter: Samuel Guo
Priority: Minor
some conditions will be checked before we construct the result matrix and
compose the matrix algebra map/reduce job.
for examples,
A + B, we need check that A.rows = B.rows & A.columns = B.columns
A * B, we need check that A.columns = B.rows.
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