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Posted to issues@spark.apache.org by "Maxim Gekk (JIRA)" <ji...@apache.org> on 2018/03/10 15:04:00 UTC

[jira] [Created] (SPARK-23643) XORShiftRandom.setSeed allocates unnecessary memory

Maxim Gekk created SPARK-23643:
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             Summary: XORShiftRandom.setSeed allocates unnecessary memory
                 Key: SPARK-23643
                 URL: https://issues.apache.org/jira/browse/SPARK-23643
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 2.3.0
            Reporter: Maxim Gekk


The setSeed method allocates 64 bytes buffer and puts only 8 bytes of the seed parameter into it. Other bytes are always zero and could be easily excluded from hash calculation.



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