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Posted to issues@spark.apache.org by "Shixiong Zhu (JIRA)" <ji...@apache.org> on 2015/12/01 01:16:10 UTC

[jira] [Created] (SPARK-12060) Avoid memory copy in JavaSerializerInstance.serialize

Shixiong Zhu created SPARK-12060:
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             Summary: Avoid memory copy in JavaSerializerInstance.serialize
                 Key: SPARK-12060
                 URL: https://issues.apache.org/jira/browse/SPARK-12060
             Project: Spark
          Issue Type: Test
            Reporter: Shixiong Zhu


JavaSerializerInstance.serialize uses ByteArrayOutputStream.toByteArray to get the serialized data. ByteArrayOutputStream.toByteArray needs to copy the content in the internal array to a new array. However, since the array will be converted to ByteBuffer at once, we can avoid the memory copy.



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