public int getPriority() {
    return Integer.MAX_VALUE;
  }
Get the priority level for this handler instance. This uses natural ordering so lower numbers
are higher priority.
<p>
Lowest priority is Integer.MAX_VALUE. Highest priority is 0.
<p>
Subclasses should override this method to allow prioritizing handlers.
<p>
Handlers with the same priority are handled in FIFO order.
<p>
@return Integer.MAX_VALUE by default, override to set higher priorities
hbase-server/src/main/java/org/apache/hadoop/hbase/executor/EventHandler.java