public boolean isHostIgnored() {
    return !Objects.equals(ignoreHost, 0);
  }
Gets whether this alert definition will ignore the hosts reporting the
alert and combine them all into a single alert entry.

@return {@code true} if this alert definition is to ignore hosts and
combine all alert instances into a single entry, {@code false}
otherwise.
ambari-server/src/main/java/org/apache/ambari/server/orm/entities/AlertDefinitionEntity.java