void waitForReachedGlobalBarrier() throws ForeignException, InterruptedException {
    Procedure.waitForLatch(inGlobalBarrier, monitor, wakeFrequency,
      barrierName + ":remote acquired");
  }
Wait for the reached global barrier notification. Package visibility for testing
hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/Subprocedure.java