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Posted to dev@ignite.apache.org by "Anton Dmitriev (JIRA)" <ji...@apache.org> on 2018/07/23 14:49:00 UTC

[jira] [Created] (IGNITE-9055) [ML] SVM throws NPE in case of empty partitions

Anton Dmitriev created IGNITE-9055:
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             Summary: [ML] SVM throws NPE in case of empty partitions
                 Key: IGNITE-9055
                 URL: https://issues.apache.org/jira/browse/IGNITE-9055
             Project: Ignite
          Issue Type: Bug
          Components: ml
    Affects Versions: 2.5, 2.6
            Reporter: Anton Dmitriev
             Fix For: 2.7


Method `calculateUpdates` throws NPE in case of empty partitions. Reduce function user in this method doesn't handle correctly empty arguments (`(a, b) -> a == null ? b : a.plus(b))`).

We need to fix this reduce function or update Partition Based Dataset so that it doesn't emit empty arguments.



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