TestSetrepIncreasing.java
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- /**
- * 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.hdfs;
- import junit.framework.TestCase;
- import java.io.*;
- import org.apache.hadoop.conf.Configuration;
- import org.apache.hadoop.fs.*;
- import org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset;
- public class TestSetrepIncreasing extends TestCase {
- static void setrep(int fromREP, int toREP, boolean simulatedStorage) throws IOException {
- Configuration conf = new Configuration();
- if (simulatedStorage) {
- conf.setBoolean(SimulatedFSDataset.CONFIG_PROPERTY_SIMULATED, true);
- }
- conf.set("dfs.replication", "" + fromREP);
- conf.setLong("dfs.blockreport.intervalMsec", 1000L);
- conf.set("dfs.replication.pending.timeout.sec", Integer.toString(2));
- MiniDFSCluster cluster = new MiniDFSCluster(conf, 10, true, null);
- FileSystem fs = cluster.getFileSystem();
- assertTrue("Not a HDFS: "+fs.getUri(), fs instanceof DistributedFileSystem);
- try {
- Path root = TestDFSShell.mkdir(fs,
- new Path("/test/setrep" + fromREP + "-" + toREP));
- Path f = TestDFSShell.writeFile(fs, new Path(root, "foo"));
-
- // Verify setrep for changing replication
- {
- String[] args = {"-setrep", "-w", "" + toREP, "" + f};
- FsShell shell = new FsShell();
- shell.setConf(conf);
- try {
- assertEquals(0, shell.run(args));
- } catch (Exception e) {
- assertTrue("-setrep " + e, false);
- }
- }
- //get fs again since the old one may be closed
- fs = cluster.getFileSystem();
- FileStatus file = fs.getFileStatus(f);
- long len = file.getLen();
- for(BlockLocation locations : fs.getFileBlockLocations(file, 0, len)) {
- assertTrue(locations.getHosts().length == toREP);
- }
- TestDFSShell.show("done setrep waiting: " + root);
- } finally {
- try {fs.close();} catch (Exception e) {}
- cluster.shutdown();
- }
- }
- public void testSetrepIncreasing() throws IOException {
- setrep(3, 7, false);
- }
- public void testSetrepIncreasingSimulatedStorage() throws IOException {
- setrep(3, 7, true);
- }
- }