helix-core/src/main/java/org/apache/helix/ExternalCommand.java [243:260]:
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  public int waitFor(long timeout) throws InterruptedException, TimeoutException {
    if (_process == null)
      throw new IllegalStateException("you must call start first");

    // Chronos c = new Chronos();
    _out.join(timeout);
    // timeout -= c.tick();
    if (timeout <= 0)
      throw new TimeoutException("Wait timed out");
    _err.join(timeout);
    // timeout -= c.tick();
    if (timeout <= 0)
      throw new TimeoutException("Wait timed out");

    // there is no timeout in this API, not much we can do here
    // waiting on the other two threads should give us some safety
    return _process.waitFor();
  }
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recipes/rsync-replicated-file-system/src/main/java/org/apache/helix/filestore/ExternalCommand.java [226:243]:
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  public int waitFor(long timeout) throws InterruptedException, TimeoutException {
    if (_process == null)
      throw new IllegalStateException("you must call start first");

    // Chronos c = new Chronos();
    _out.join(timeout);
    // timeout -= c.tick();
    if (timeout <= 0)
      throw new TimeoutException("Wait timed out");
    _err.join(timeout);
    // timeout -= c.tick();
    if (timeout <= 0)
      throw new TimeoutException("Wait timed out");

    // there is no timeout in this API, not much we can do here
    // waiting on the other two threads should give us some safety
    return _process.waitFor();
  }
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