protected void abortServer(final String coprocessorName, final Throwable e) {
    String message = "The coprocessor " + coprocessorName + " threw " + e.toString();
    LOG.error(message, e);
    if (abortable != null) {
      abortable.abort(message, e);
    } else {
      LOG.warn("No available Abortable, process was not aborted");
    }
  }
Environment priority comparator. Coprocessors are chained in sorted order.
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java