1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one |
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3 | * or more contributor license agreements. See the NOTICE file |
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4 | * distributed with this work for additional information |
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5 | * regarding copyright ownership. The ASF licenses this file |
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6 | * to you under the Apache License, Version 2.0 (the |
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7 | * "License"); you may not use this file except in compliance |
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8 | * with the License. You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | package org.apache.hadoop.hdfs; |
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19 | |
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20 | import junit.framework.TestCase; |
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21 | import java.io.*; |
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22 | |
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23 | import org.apache.hadoop.conf.Configuration; |
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24 | import org.apache.hadoop.fs.*; |
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25 | import org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset; |
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26 | |
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27 | public class TestSetrepIncreasing extends TestCase { |
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28 | static void setrep(int fromREP, int toREP, boolean simulatedStorage) throws IOException { |
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29 | Configuration conf = new Configuration(); |
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30 | if (simulatedStorage) { |
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31 | conf.setBoolean(SimulatedFSDataset.CONFIG_PROPERTY_SIMULATED, true); |
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32 | } |
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33 | conf.set("dfs.replication", "" + fromREP); |
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34 | conf.setLong("dfs.blockreport.intervalMsec", 1000L); |
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35 | conf.set("dfs.replication.pending.timeout.sec", Integer.toString(2)); |
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36 | MiniDFSCluster cluster = new MiniDFSCluster(conf, 10, true, null); |
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37 | FileSystem fs = cluster.getFileSystem(); |
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38 | assertTrue("Not a HDFS: "+fs.getUri(), fs instanceof DistributedFileSystem); |
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39 | |
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40 | try { |
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41 | Path root = TestDFSShell.mkdir(fs, |
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42 | new Path("/test/setrep" + fromREP + "-" + toREP)); |
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43 | Path f = TestDFSShell.writeFile(fs, new Path(root, "foo")); |
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44 | |
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45 | // Verify setrep for changing replication |
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46 | { |
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47 | String[] args = {"-setrep", "-w", "" + toREP, "" + f}; |
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48 | FsShell shell = new FsShell(); |
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49 | shell.setConf(conf); |
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50 | try { |
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51 | assertEquals(0, shell.run(args)); |
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52 | } catch (Exception e) { |
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53 | assertTrue("-setrep " + e, false); |
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54 | } |
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55 | } |
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56 | |
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57 | //get fs again since the old one may be closed |
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58 | fs = cluster.getFileSystem(); |
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59 | FileStatus file = fs.getFileStatus(f); |
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60 | long len = file.getLen(); |
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61 | for(BlockLocation locations : fs.getFileBlockLocations(file, 0, len)) { |
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62 | assertTrue(locations.getHosts().length == toREP); |
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63 | } |
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64 | TestDFSShell.show("done setrep waiting: " + root); |
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65 | } finally { |
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66 | try {fs.close();} catch (Exception e) {} |
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67 | cluster.shutdown(); |
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68 | } |
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69 | } |
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70 | |
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71 | public void testSetrepIncreasing() throws IOException { |
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72 | setrep(3, 7, false); |
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73 | } |
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74 | public void testSetrepIncreasingSimulatedStorage() throws IOException { |
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75 | setrep(3, 7, true); |
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76 | } |
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77 | } |
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