Shixiong Zhu 1401166576 [SPARK-12060][CORE] Avoid memory copy in JavaSerializerInstance.serialize ... `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. This PR added `ByteBufferOutputStream` to access the protected `buf` and convert it to a `ByteBuffer` directly. Author: Shixiong Zhu <shixiong@databricks.com> Closes #10051 from zsxwing/SPARK-12060.		2015-12-01 09:45:55 -08:00
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src	[SPARK-12060][CORE] Avoid memory copy in JavaSerializerInstance.serialize	2015-12-01 09:45:55 -08:00
pom.xml	Revert "[SPARK-11271][SPARK-11016][CORE] Use Spark BitSet instead of RoaringBitmap to reduce memory usage"	2015-11-16 14:50:38 -08:00