Examples of SimulatedFSDataset

org.apache.hadoop.dfs.SimulatedFSDataset
This class implements a simulated FSDataset. Blocks that are created are recorded but their data (plus their CRCs) are discarded. Fixed data is returned when blocks are read; a null CRC meta file is created for such data. This FSDataset does not remember any block information across its restarts; it does however offer an operation to inject blocks (See the TestInectionForSImulatedStorage() for a usage example of injection. Note the synchronization is coarse grained - it is at each method.
org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset
This class implements a simulated FSDataset. Blocks that are created are recorded but their data (plus their CRCs) are discarded. Fixed data is returned when blocks are read; a null CRC meta file is created for such data. This FSDataset does not remember any block information across its restarts; it does however offer an operation to inject blocks (See the TestInectionForSImulatedStorage() for a usage example of injection. Note the synchronization is coarse grained - it is at each method.

Examples of org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset

      throw new IOException("injectBlocks is valid only for SimilatedFSDataset");
    }
    if (bpid == null) {
      bpid = getNamesystem().getBlockPoolId();
    }
    SimulatedFSDataset sdataset = (SimulatedFSDataset) dataSet;
    sdataset.injectBlocks(bpid, blocksToInject);
    dataNodes.get(dataNodeIndex).datanode.scheduleAllBlockReport(0);
  }

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