/** * This is the main driver for recursively copying directories across file systems. It takes at * least two cmdline parameters. A source URL and a destination URL. It then essentially does an * "ls -lR" on the source URL, and writes the output in a round-robin manner to all the map input * files. The mapper actually copies the files allotted to it. The reduce is empty. */ public int run(String[] args) { try { copy(conf, Arguments.valueOf(args, conf)); return 0; } catch (IllegalArgumentException e) { System.err.println(StringUtils.stringifyException(e) + "\n" + usage); ToolRunner.printGenericCommandUsage(System.err); return -1; } catch (DuplicationException e) { System.err.println(StringUtils.stringifyException(e)); return DuplicationException.ERROR_CODE; } catch (RemoteException e) { final IOException unwrapped = e.unwrapRemoteException( FileNotFoundException.class, AccessControlException.class, QuotaExceededException.class); System.err.println(StringUtils.stringifyException(unwrapped)); return -3; } catch (Exception e) { System.err.println( "With failures, global counters are inaccurate; " + "consider running with -i"); System.err.println("Copy failed: " + StringUtils.stringifyException(e)); return -999; } }