[HDFS-13210] Fix the typo in MiniDFSCluster class

• Type: Bug
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.1.0
• Component/s: test
• Target Version/s: 3.2.0
• Hadoop Flags: Reviewed
• Assignee: fang zhenyi
• Reporter: Yiqun Lin
• Created: 01/Mar/18 04:07
• Updated: 19/Mar/18 18:31
• Resolved: 02/Mar/18 03:50

Description

There is a typo SimilatedFSDataset in MiniDFSCluster#injectBlocks.
In line2748 and line2769:

public void injectBlocks(int dataNodeIndex,
      Iterable<Block> blocksToInject, String bpid) throws IOException {
    if (dataNodeIndex < 0 || dataNodeIndex > dataNodes.size()) {
      throw new IndexOutOfBoundsException();
    }
    final DataNode dn = dataNodes.get(dataNodeIndex).datanode;
    final FsDatasetSpi<?> dataSet = DataNodeTestUtils.getFSDataset(dn);
    if (!(dataSet instanceof SimulatedFSDataset)) {
      throw new IOException("injectBlocks is valid only for SimilatedFSDataset");
    }
...
}

SimilatedFSDataset should be SimulatedFSDataset.