Examples with DirectoryListing org.apache.hadoop.hdfs.protocol.DirectoryListing used on opensource projects

Example 16 with DirectoryListing

use of org.apache.hadoop.hdfs.protocol.DirectoryListing in project hadoop by apache.

the class TestINodeFile method testFilesInGetListingOps.

@Test
public void testFilesInGetListingOps() throws Exception {
    final Configuration conf = new Configuration();
    MiniDFSCluster cluster = null;
    try {
        cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
        cluster.waitActive();
        final DistributedFileSystem hdfs = cluster.getFileSystem();
        final FSDirectory fsdir = cluster.getNamesystem().getFSDirectory();
        hdfs.mkdirs(new Path("/tmp"));
        DFSTestUtil.createFile(hdfs, new Path("/tmp/f1"), 0, (short) 1, 0);
        DFSTestUtil.createFile(hdfs, new Path("/tmp/f2"), 0, (short) 1, 0);
        DFSTestUtil.createFile(hdfs, new Path("/tmp/f3"), 0, (short) 1, 0);
        DirectoryListing dl = cluster.getNameNodeRpc().getListing("/tmp", HdfsFileStatus.EMPTY_NAME, false);
        assertTrue(dl.getPartialListing().length == 3);
        String f2 = new String("f2");
        dl = cluster.getNameNodeRpc().getListing("/tmp", f2.getBytes(), false);
        assertTrue(dl.getPartialListing().length == 1);
        INode f2INode = fsdir.getINode("/tmp/f2");
        String f2InodePath = "/.reserved/.inodes/" + f2INode.getId();
        dl = cluster.getNameNodeRpc().getListing("/tmp", f2InodePath.getBytes(), false);
        assertTrue(dl.getPartialListing().length == 1);
        // Test the deleted startAfter file
        hdfs.delete(new Path("/tmp/f2"), false);
        try {
            dl = cluster.getNameNodeRpc().getListing("/tmp", f2InodePath.getBytes(), false);
            fail("Didn't get exception for the deleted startAfter token.");
        } catch (IOException e) {
            assertTrue(e instanceof DirectoryListingStartAfterNotFoundException);
        }
    } finally {
        if (cluster != null) {
            cluster.shutdown();
        }
    }
}