public static boolean isExists(final FileSystem fs, final Path path) throws IOException {
    return fs.exists(path);
  }
Calls fs.exists(). Checks if the specified path exists
@param fs   must not be null
@param path must not be null
@return the value returned by fs.exists()
@throws IOException from underlying FileSystem
hbase-common/src/main/java/org/apache/hadoop/hbase/util/CommonFSUtils.java