public boolean isExpired(long minRelevantTime) {
      return getActivityTime() < (minRelevantTime & (~0L >>> 3));
    }
The time to wait in an extremely unlikely case of a conflict with a running op. Only here so
that tests could override it and not wait.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ServerNonceManager.java