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From thunterdb <>
Subject [GitHub] spark issue #15074: [SPARK-17520] Implement a better __eq__ for SparseMatrix
Date Tue, 08 Nov 2016 22:43:44 GMT
Github user thunterdb commented on the issue:
    @dbtsai and @holdenk have a good point about the equality being a actually an equivalence
check (we want to check that two matrices have the same content, not that two python objects
have the same structure and content).
    I suggest instead to add a fast path when comparing 2 sparse matrices with the same transpose
parameter, and send all the rest to the existing, slower `.toArray()` method. As @holdenk
pointed out, the path for different transposes could be accelerated as well, but I am not
sure how important it is in practice since this PR is already a performance-related PR.

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