/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, Inc. 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 com.cloudera.flume;
import java.io.File;
import java.io.IOException;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.SequenceFile;
import org.apache.hadoop.io.SequenceFile.Writer;
import org.junit.Test;
import com.cloudera.flume.conf.FlumeConfiguration;
import com.cloudera.flume.core.Event;
import com.cloudera.flume.core.EventUtil;
import com.cloudera.flume.handlers.debug.MemorySinkSource;
import com.cloudera.flume.handlers.debug.TextFileSource;
import com.cloudera.flume.handlers.hdfs.SeqfileEventSink;
import com.cloudera.flume.handlers.hdfs.WriteableEvent;
import com.cloudera.flume.handlers.hdfs.WriteableEventKey;
import com.cloudera.util.Benchmark;
public class PerfHdfsIO implements ExamplePerfData {
@Test
public void testCopy() throws IOException, InterruptedException {
Benchmark b = new Benchmark("hdfs seqfile copy");
b.mark("begin");
TextFileSource txt = new TextFileSource(HADOOP_DATA[0]);
txt.open();
MemorySinkSource mem = new MemorySinkSource();
mem.open();
EventUtil.dumpAll(txt, mem);
txt.close();
b.mark("disk_loaded");
File tmp = File.createTempFile("test", "tmp");
tmp.deleteOnExit();
SeqfileEventSink sink = new SeqfileEventSink(tmp);
sink.open();
b.mark("localdisk_write_started");
EventUtil.dumpAll(mem, sink);
b.mark("local_disk_write done");
sink.close();
FlumeConfiguration conf = FlumeConfiguration.get();
Path src = new Path(tmp.getAbsolutePath());
Path dst = new Path("hdfs://localhost/testfile");
FileSystem hdfs = dst.getFileSystem(conf);
hdfs.deleteOnExit(dst);
b.mark("hdfs_copy_started");
hdfs.copyFromLocalFile(src, dst);
b.mark("hdfs_copy_done");
hdfs.close();
b.done();
}
@Test
public void testDirectWrite() throws IOException, InterruptedException {
Benchmark b = new Benchmark("hdfs seqfile write");
b.mark("begin");
TextFileSource txt = new TextFileSource(HADOOP_DATA[0]);
txt.open();
MemorySinkSource mem = new MemorySinkSource();
mem.open();
EventUtil.dumpAll(txt, mem);
txt.close();
b.mark("disk_loaded");
FlumeConfiguration conf = FlumeConfiguration.get();
Path path = new Path("hdfs://localhost/testfile");
FileSystem hdfs = path.getFileSystem(conf);
hdfs.deleteOnExit(path);
Writer w = SequenceFile.createWriter(hdfs, conf, path,
WriteableEventKey.class, WriteableEvent.class);
b.mark("hdfs_fileopen_started");
Event e = null;
while ((e = mem.next()) != null) {
// writing
w.append(new WriteableEventKey(e), new WriteableEvent(e));
}
w.close();
b.mark("seqfile_hdfs_write");
hdfs.close();
b.done();
}
}