HBASE-16680 Reduce garbage in BufferChain
Signed-off-by: Yu Li <liyu@apache.org>
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96c5a02217
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@ -20,8 +20,6 @@ package org.apache.hadoop.hbase.ipc;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.nio.channels.GatheringByteChannel;
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import java.util.ArrayList;
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import java.util.List;
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import org.apache.hadoop.hbase.classification.InterfaceAudience;
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@ -35,22 +33,11 @@ class BufferChain {
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private int remaining = 0;
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private int bufferOffset = 0;
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BufferChain(ByteBuffer ... buffers) {
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// Some of the incoming buffers can be null
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List<ByteBuffer> bbs = new ArrayList<ByteBuffer>(buffers.length);
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for (ByteBuffer b : buffers) {
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if (b == null) continue;
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bbs.add(b);
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this.remaining += b.remaining();
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}
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this.buffers = bbs.toArray(new ByteBuffer[bbs.size()]);
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}
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BufferChain(List<ByteBuffer> buffers) {
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BufferChain(ByteBuffer[] buffers) {
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for (ByteBuffer b : buffers) {
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this.remaining += b.remaining();
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}
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this.buffers = buffers.toArray(new ByteBuffer[buffers.size()]);
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this.buffers = buffers;
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}
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/**
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@ -411,7 +411,9 @@ public class RpcServer implements RpcServerInterface, ConfigurationObserver {
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}
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protected synchronized void setSaslTokenResponse(ByteBuffer response) {
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this.response = new BufferChain(response);
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ByteBuffer[] responseBufs = new ByteBuffer[1];
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responseBufs[0] = response;
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this.response = new BufferChain(responseBufs);
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}
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protected synchronized void setResponse(Object m, final CellScanner cells,
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@ -458,10 +460,20 @@ public class RpcServer implements RpcServerInterface, ConfigurationObserver {
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}
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Message header = headerBuilder.build();
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byte[] b = createHeaderAndMessageBytes(result, header, cellBlockSize);
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List<ByteBuffer> responseBufs = new ArrayList<ByteBuffer>(
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(cellBlock == null ? 1 : cellBlock.size()) + 1);
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responseBufs.add(ByteBuffer.wrap(b));
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if (cellBlock != null) responseBufs.addAll(cellBlock);
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ByteBuffer[] responseBufs = null;
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int cellBlockBufferSize = 0;
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if (cellBlock != null) {
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cellBlockBufferSize = cellBlock.size();
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responseBufs = new ByteBuffer[1 + cellBlockBufferSize];
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} else {
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responseBufs = new ByteBuffer[1];
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}
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responseBufs[0] = ByteBuffer.wrap(b);
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if (cellBlock != null) {
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for (int i = 0; i < cellBlockBufferSize; i++) {
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responseBufs[i + 1] = cellBlock.get(i);
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}
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}
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bc = new BufferChain(responseBufs);
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if (connection.useWrap) {
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bc = wrapWithSasl(bc);
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@ -555,9 +567,10 @@ public class RpcServer implements RpcServerInterface, ConfigurationObserver {
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+ " as call response.");
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}
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ByteBuffer bbTokenLength = ByteBuffer.wrap(Bytes.toBytes(token.length));
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ByteBuffer bbTokenBytes = ByteBuffer.wrap(token);
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return new BufferChain(bbTokenLength, bbTokenBytes);
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ByteBuffer[] responseBufs = new ByteBuffer[2];
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responseBufs[0] = ByteBuffer.wrap(Bytes.toBytes(token.length));
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responseBufs[1] = ByteBuffer.wrap(token);
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return new BufferChain(responseBufs);
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}
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@Override
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