List of corruptReplica() Examples

Examples of corruptReplica()

org.apache.hadoop.hdfs.MiniDFSCluster.corruptReplica()
Corrupt a block on a particular datanode. @param i index of the datanode @param blk name of the block @throws IOException on error accessing the given block or ifthe contents of the block (on the same datanode) differ. @return true if a replica was corrupted, false otherwiseTypes: delete, write bad data, truncate

Examples of org.apache.hadoop.hdfs.MiniDFSCluster.corruptReplica()

      Block b = DFSTestUtil.getFirstBlock(fs, filePath);
      DFSTestUtil.waitForReplication(cluster, b, 2, REPLICATION_FACTOR, 0);


      // Corrupt a replica of the block
      int dnToCorrupt = DFSTestUtil.firstDnWithBlock(cluster, b);
      assertTrue(cluster.corruptReplica(b.getBlockName(), dnToCorrupt));


      // Restart the datanode so blocks are re-scanned, and the corrupt
      // block is detected.
      cluster.restartDataNode(dnToCorrupt);

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.corruptReplica()


      // Now corrupt all the files except for the last one
      for (int idx = 0; idx < filepaths.length - 1; idx++) {
        String blockName = DFSTestUtil.getFirstBlock(fs, filepaths[idx])
            .getBlockName();
        assertTrue(cluster.corruptReplica(blockName, 0));


        // read the file so that the corrupt block is reported to NN
        FSDataInputStream in = fs.open(filepaths[idx]);
        try {
          in.readFully(new byte[FILE_SIZE]);

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Examples of org.apache.hadoop.hdfs.MiniDFSCluster.corruptReplica()

      DFSTestUtil.createFile(fs, fileName, 2, (short)3, 0L);
      DFSTestUtil.waitReplication(fs, fileName, (short)3);
      
      // corrupt the block on datanode 0
      Block block = DFSTestUtil.getFirstBlock(fs, fileName);
      assertTrue(cluster.corruptReplica(block.getBlockName(), 0));
      DataNodeProperties dnProps = cluster.stopDataNode(0);
      // remove block scanner log to trigger block scanning
      File scanLog = new File(System.getProperty("test.build.data"),
          "dfs/data/data1" + MiniDFSCluster.FINALIZED_DIR_NAME + 
          "dncp_block_verification.log.curr");

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