public void testAbandonBlock() throws IOException {
MiniDFSCluster cluster = new MiniDFSCluster(CONF, 2, true, null);
FileSystem fs = cluster.getFileSystem();
String src = FILE_NAME_PREFIX + "foo";
FSDataOutputStream fout = null;
try {
// start writing a a file but not close it
fout = fs.create(new Path(src), true, 4096, (short) 1, 512L);
for (int i = 0; i < 1024; i++) {
fout.write(123);
}
fout.sync();
// try reading the block by someone
final DFSClient dfsclient = new DFSClient(NameNode.getAddress(CONF), CONF);
LocatedBlocks blocks = dfsclient.namenode.getBlockLocations(src, 0, 1);
LocatedBlock b = blocks.get(0);
try {
dfsclient.namenode.abandonBlock(b.getBlock(), src, "someone");
// previous line should throw an exception.
assertTrue(false);
} catch (IOException ioe) {
LOG.info("GREAT! " + StringUtils.stringifyException(ioe));
}
} finally {
try {
fout.close();
} catch (Exception e) {
}
try {
fs.close();
} catch (Exception e) {
}
try {
cluster.shutdown();
} catch (Exception e) {
}
}
}
