Package org.apache.hadoop.hdfs

Examples of org.apache.hadoop.hdfs.DFSTestUtil.waitReplication()

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      cluster = new MiniDFSCluster.Builder(conf).numDataNodes(4).build();
      String topDir = "/srcdat";
      fs = cluster.getFileSystem();
      cluster.waitActive();
      util.createFiles(fs, topDir);
      util.waitReplication(fs, topDir, (short)3);
      String outStr = runFsck(conf, 0, true, "/");
      assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
     
      // Corrupt a block by deleting it
      String[] fileNames = util.getFileNames(topDir);
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      String topDir = "/srcdat";
      String randomString = "HADOOP  ";
      fs = cluster.getFileSystem();
      cluster.waitActive();
      util.createFiles(fs, topDir);
      util.waitReplication(fs, topDir, (short)3);
      String outStr = runFsck(conf, 0, true, "/");
      assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
      // Open a file for writing and do not close for now
      Path openFile = new Path(topDir + "/openFile");
      FSDataOutputStream out = fs.create(openFile);
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      fs = cluster.getFileSystem();
      DFSTestUtil util = new DFSTestUtil.Builder().
          setName("testGetCorruptFiles").setNumFiles(3).setMaxLevels(1).
          setMaxSize(1024).build();
      util.createFiles(fs, "/corruptData", (short) 1);
      util.waitReplication(fs, "/corruptData", (short) 1);

      // String outStr = runFsck(conf, 0, true, "/corruptData", "-list-corruptfileblocks");
      String outStr = runFsck(conf, 0, false, "/corruptData", "-list-corruptfileblocks");
      System.out.println("1. good fsck out: " + outStr);
      assertTrue(outStr.contains("has 0 CORRUPT files"));
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      final FileContext fc = FileContext.getFileContext(
          cluster.getConfiguration(0));
      final Path file = new Path(fileName);
      final Path symlink = new Path("/srcdat-symlink");
      fc.createSymlink(file, symlink, false);
      util.waitReplication(fs, fileName, (short)3);
      long aTime = fc.getFileStatus(symlink).getAccessTime();
      Thread.sleep(precision);
      setupAuditLogs();
      String outStr = runFsck(conf, 0, true, "/");
      verifyAuditLogs();
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      Configuration conf = new Configuration();
      conf.setLong("dfs.blockreport.intervalMsec", 10000L);
      cluster = new MiniDFSCluster(conf, 4, true, null);
      fs = cluster.getFileSystem();
      util.createFiles(fs, "/srcdat");
      util.waitReplication(fs, "/srcdat", (short)3);
      String outStr = runFsck(conf, 0, true, "/");
      assertTrue(-1 != outStr.indexOf("HEALTHY"));
      System.out.println(outStr);
      if (fs != null) {try{fs.close();} catch(Exception e){}}
      cluster.shutdown();
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      Configuration conf = new Configuration();
      conf.setLong("dfs.blockreport.intervalMsec", 10000L);
      cluster = new MiniDFSCluster(conf, 4, true, null);
      fs = cluster.getFileSystem();
      util.createFiles(fs, "/srcdat");
      util.waitReplication(fs, "/srcdat", (short)3);
      String outStr = runFsck(conf, 0, true, "/non-existent");
      assertEquals(-1, outStr.indexOf("HEALTHY"));
      System.out.println(outStr);
      util.cleanup(fs, "/srcdat");
    } finally {
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      cluster = new MiniDFSCluster(conf, 4, true, null);
      String topDir = "/srcdat";
      fs = cluster.getFileSystem();
      cluster.waitActive();
      util.createFiles(fs, topDir);
      util.waitReplication(fs, topDir, (short)3);
      String outStr = runFsck(conf, 0, true, "/");
      assertTrue(outStr.contains("HEALTHY"));
     
      // Corrupt a block by deleting it
      String[] fileNames = util.getFileNames(topDir);
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      String topDir = "/srcdat";
      String randomString = "HADOOP  ";
      fs = cluster.getFileSystem();
      cluster.waitActive();
      util.createFiles(fs, topDir);
      util.waitReplication(fs, topDir, (short)3);
      String outStr = runFsck(conf, 0, true, "/");
      assertTrue(outStr.contains("HEALTHY"));
      // Open a file for writing and do not close for now
      Path openFile = new Path(topDir + "/openFile");
      FSDataOutputStream out = fs.create(openFile);
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      conf.setLong("dfs.blockreport.intervalMsec", 10000L);
      cluster = new MiniDFSCluster(conf, 4, true, null);
      fs = cluster.getFileSystem();
      final String fileName = "/srcdat";
      util.createFiles(fs, fileName);
      util.waitReplication(fs, fileName, (short)3);
      FileStatus[] stats = fs.listStatus(new Path(fileName));
      assertFalse(0==stats.length);
      final Path file = stats[0].getPath();
      long aTime = fs.getFileStatus(file).getAccessTime();
      Thread.sleep(2*precision);
 
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      Configuration conf = new Configuration();
      conf.setLong("dfs.blockreport.intervalMsec", 10000L);
      cluster = new MiniDFSCluster(conf, 4, true, null);
      fs = cluster.getFileSystem();
      util.createFiles(fs, "/srcdat");
      util.waitReplication(fs, "/srcdat", (short)3);
      String outStr = runFsck(conf, 0, true, "/non-existent");
      assertEquals(-1, outStr.indexOf(NamenodeFsck.HEALTHY_STATUS));
      System.out.println(outStr);
      util.cleanup(fs, "/srcdat");
    } finally {
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