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Posted to issues@spark.apache.org by "Liwei Lin (JIRA)" <ji...@apache.org> on 2016/09/01 07:44:20 UTC

[jira] [Created] (SPARK-17359) Use +=(A) instead of append(A) in performance critical paths

Liwei Lin created SPARK-17359:
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             Summary: Use +=(A) instead of append(A) in performance critical paths
                 Key: SPARK-17359
                 URL: https://issues.apache.org/jira/browse/SPARK-17359
             Project: Spark
          Issue Type: Improvement
          Components: MLlib, SQL
    Affects Versions: 2.0.0
            Reporter: Liwei Lin
            Priority: Minor


We should generally use ArrayBuffer.+=(A) rather than ArrayBuffer.append(A), because append(A) would involve extra boxing / unboxing.



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