public boolean cleanupDataTestDirOnTestFS(String subdirName) throws IOException {
    Path cpath = getDataTestDirOnTestFS(subdirName);
    return getTestFileSystem().delete(cpath, true);
  }
Cleans a subdirectory under the test data directory on the test filesystem.
@return True if we removed child
hbase-server/src/test/java/org/apache/hadoop/hbase/HBaseTestingUtil.java