liupc commented on a change in pull request #23602:
[SPARK-26674][CORE]Consolidate CompositeByteBuf when reading large frame
URL: https://github.com/apache/spark/pull/23602#discussion_r258473035
##########
File path:
common/network-common/src/test/java/org/apache/spark/network/util/TransportFrameDecoderSuite.java
##########
@@ -47,6 +51,67 @@ public void testFrameDecoding() throws Exception {
verifyAndCloseDecoder(decoder, ctx, data);
}
+ @Test
+ public void testConsolidationPerf() throws Exception {
+ long[] testingConsolidateThresholds = new long[] {
+ ByteUnit.MiB.toBytes(1),
+ ByteUnit.MiB.toBytes(5),
+ ByteUnit.MiB.toBytes(10),
+ ByteUnit.MiB.toBytes(20),
+ ByteUnit.MiB.toBytes(30),
+ ByteUnit.MiB.toBytes(50),
+ ByteUnit.MiB.toBytes(80),
+ ByteUnit.MiB.toBytes(100),
+ ByteUnit.MiB.toBytes(300),
+ ByteUnit.MiB.toBytes(500),
+ Long.MAX_VALUE };
+ for (long threshold : testingConsolidateThresholds) {
+ TransportFrameDecoder decoder = new TransportFrameDecoder(threshold);
+ ChannelHandlerContext ctx = mock(ChannelHandlerContext.class);
+ List<ByteBuf> retained = new ArrayList<>();
+ when(ctx.fireChannelRead(any())).thenAnswer(in -> {
+ ByteBuf buf = (ByteBuf) in.getArguments()[0];
+ retained.add(buf);
+ return null;
+ });
+
+ // Testing multiple messages
+ int numMessages = 3;
+ long targetBytes = ByteUnit.GiB.toBytes(1);
+ int pieceBytes = (int) ByteUnit.KiB.toBytes(32);
+ for (int i = 0; i < numMessages; i++) {
+ try {
+ long start = System.currentTimeMillis();
+ long writtenBytes = 0;
+ ByteBuf buf = Unpooled.buffer(8);
+ buf.writeLong(8 + ByteUnit.GiB.toBytes(1));
+ decoder.channelRead(ctx, buf);
+ while (writtenBytes < targetBytes) {
+ buf = Unpooled.buffer(pieceBytes * 2);
+ ByteBuf writtenBuf =
Unpooled.buffer(pieceBytes).writerIndex(pieceBytes);
+ buf.writeBytes(writtenBuf);
+ writtenBuf.release();
+ decoder.channelRead(ctx, buf);
+ writtenBytes += pieceBytes;
+ }
+ long elapsedTime = System.currentTimeMillis() - start;
+ logger.info("Writing 1GiB frame buf with consolidation of threshold
" + threshold
+ + " took " + elapsedTime + " milis");
+ } finally {
+ for (ByteBuf buf : retained) {
+ release(buf);
+ }
+ }
+ }
+ long totalBytesGot = 0;
+ for (ByteBuf buf : retained) {
+ totalBytesGot += buf.capacity();
+ }
+ assertEquals(numMessages, retained.size());
+ assertEquals(targetBytes * numMessages, totalBytesGot);
Review comment:
Done!
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