Examples with MLocation org.apache.hadoop.hdfs.server.mover.Mover.MLocation used on opensource projects

Example 1 with MLocation

use of org.apache.hadoop.hdfs.server.mover.Mover.MLocation in project hadoop by apache.

the class TestMover method testScheduleSameBlock.

@Test
public void testScheduleSameBlock() throws IOException {
    final Configuration conf = new HdfsConfiguration();
    final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(4).build();
    try {
        cluster.waitActive();
        final DistributedFileSystem dfs = cluster.getFileSystem();
        final String file = "/testScheduleSameBlock/file";
        {
            final FSDataOutputStream out = dfs.create(new Path(file));
            out.writeChars("testScheduleSameBlock");
            out.close();
        }
        final Mover mover = newMover(conf);
        mover.init();
        final Mover.Processor processor = mover.new Processor();
        final LocatedBlock lb = dfs.getClient().getLocatedBlocks(file, 0).get(0);
        final List<MLocation> locations = MLocation.toLocations(lb);
        final MLocation ml = locations.get(0);
        final DBlock db = mover.newDBlock(lb, locations, null);
        final List<StorageType> storageTypes = new ArrayList<StorageType>(Arrays.asList(StorageType.DEFAULT, StorageType.DEFAULT));
        Assert.assertTrue(processor.scheduleMoveReplica(db, ml, storageTypes));
        Assert.assertFalse(processor.scheduleMoveReplica(db, ml, storageTypes));
    } finally {
        cluster.shutdown();
    }
}