| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.hbase.codec; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.hadoop.hbase.Cell; |
| import org.apache.hadoop.hbase.CellScanner; |
| import org.apache.hadoop.hbase.KeyValue; |
| import org.apache.hadoop.hbase.codec.CellCodec; |
| import org.apache.hadoop.hbase.codec.Codec; |
| import org.apache.hadoop.hbase.codec.KeyValueCodec; |
| import org.apache.hadoop.hbase.codec.MessageCodec; |
| import org.apache.hadoop.hbase.io.CellOutputStream; |
| import org.apache.hadoop.hbase.util.Bytes; |
| |
| /** |
| * Do basic codec performance eval. |
| */ |
| @InterfaceAudience.Public |
| public class CodecPerformance { |
| /** @deprecated LOG variable would be made private. since 1.2, remove in 3.0 */ |
| @Deprecated |
| public static final Logger LOG = LoggerFactory.getLogger(CodecPerformance.class); |
| |
| static Cell [] getCells(final int howMany) { |
| Cell [] cells = new Cell[howMany]; |
| for (int i = 0; i < howMany; i++) { |
| byte [] index = Bytes.toBytes(i); |
| KeyValue kv = new KeyValue(index, Bytes.toBytes("f"), index, index); |
| cells[i] = kv; |
| } |
| return cells; |
| } |
| |
| static int getRoughSize(final Cell [] cells) { |
| int size = 0; |
| for (Cell c: cells) { |
| size += c.getRowLength() + c.getFamilyLength() + c.getQualifierLength() + c.getValueLength(); |
| size += Bytes.SIZEOF_LONG + Bytes.SIZEOF_BYTE; |
| } |
| return size; |
| } |
| |
| static byte [] runEncoderTest(final int index, final int initialBufferSize, |
| final ByteArrayOutputStream baos, final CellOutputStream encoder, final Cell [] cells) |
| throws IOException { |
| long startTime = System.currentTimeMillis(); |
| for (int i = 0; i < cells.length; i++) { |
| encoder.write(cells[i]); |
| } |
| encoder.flush(); |
| LOG.info("" + index + " encoded count=" + cells.length + " in " + |
| (System.currentTimeMillis() - startTime) + "ms for encoder " + encoder); |
| // Ensure we did not have to grow the backing buffer. |
| assertTrue(baos.size() < initialBufferSize); |
| return baos.toByteArray(); |
| } |
| |
| static Cell [] runDecoderTest(final int index, final int count, final CellScanner decoder) |
| throws IOException { |
| Cell [] cells = new Cell[count]; |
| long startTime = System.currentTimeMillis(); |
| for (int i = 0; decoder.advance(); i++) { |
| cells[i] = decoder.current(); |
| } |
| LOG.info("" + index + " decoded count=" + cells.length + " in " + |
| (System.currentTimeMillis() - startTime) + "ms for decoder " + decoder); |
| // Ensure we did not have to grow the backing buffer. |
| assertTrue(cells.length == count); |
| return cells; |
| } |
| |
| static void verifyCells(final Cell [] input, final Cell [] output) { |
| assertEquals(input.length, output.length); |
| for (int i = 0; i < input.length; i ++) { |
| input[i].equals(output[i]); |
| } |
| } |
| |
| static void doCodec(final Codec codec, final Cell [] cells, final int cycles, final int count, |
| final int initialBufferSize) |
| throws IOException { |
| byte [] bytes = null; |
| Cell [] cellsDecoded = null; |
| for (int i = 0; i < cycles; i++) { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(initialBufferSize); |
| Codec.Encoder encoder = codec.getEncoder(baos); |
| bytes = runEncoderTest(i, initialBufferSize, baos, encoder, cells); |
| } |
| for (int i = 0; i < cycles; i++) { |
| ByteArrayInputStream bais = new ByteArrayInputStream(bytes); |
| Codec.Decoder decoder = codec.getDecoder(bais); |
| cellsDecoded = CodecPerformance.runDecoderTest(i, count, decoder); |
| } |
| verifyCells(cells, cellsDecoded); |
| } |
| |
| public static void main(String[] args) throws IOException { |
| // How many Cells to encode/decode on each cycle. |
| final int count = 100000; |
| // How many times to do an operation; repeat gives hotspot chance to warm up. |
| final int cycles = 30; |
| |
| Cell [] cells = getCells(count); |
| int size = getRoughSize(cells); |
| int initialBufferSize = 2 * size; // Multiply by 2 to ensure we don't have to grow buffer |
| |
| // Test KeyValue codec. |
| doCodec(new KeyValueCodec(), cells, cycles, count, initialBufferSize); |
| doCodec(new CellCodec(), cells, cycles, count, initialBufferSize); |
| doCodec(new MessageCodec(), cells, cycles, count, initialBufferSize); |
| } |
| } |