liuzqt commented on code in PR #38064:
URL: https://github.com/apache/spark/pull/38064#discussion_r993757787
##########
core/src/main/scala/org/apache/spark/util/io/ChunkedByteBuffer.scala:
##########
@@ -207,6 +273,41 @@ private[spark] object ChunkedByteBuffer {
}
out.toChunkedByteBuffer
}
+
+ /**
+ * util function writing ChunkedByteBuffer to destination with zero copy if
possible(when
+ * ChunkedByteBuffer is backed by bytes array)
+ * @param src ChunkedByteBuffer as src
+ * @param write write function writing data to destination, following the
semantic of
+ * java.io.outputStream.write(buffer Array[Byte], off Int, len
Int)
+ */
+ private def writeBufferToDest(
+ src: ChunkedByteBuffer,
+ write: (Array[Byte], Int, Int) => Unit): Unit = {
+ var buffer: Array[Byte] = null
+ val bufferLen = 1024 * 1024
+
+ src.chunks.foreach { chunk => {
Review Comment:
good point, thanks! This saves me from restoring the states
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