@Override
      public boolean evaluate() throws Exception {
        SpaceQuotaSnapshot snapshot = getSnapshotForTable(conn, tn);
        if (snapshot == null) {
          return false;
        }
        return !snapshot.getQuotaStatus().isInViolation();
      }
A test case to verify that region reports are expired when they are not sent.
hbase-server/src/test/java/org/apache/hadoop/hbase/quotas/TestQuotaObserverChoreRegionReports.java