public void reportActivity() {
      long now = EnvironmentEdgeManager.currentTime();
      this.data = (this.data & ALL_FLAG_BITS) | (now << 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