消息丢失什么意思呢?

EMQX 错误报告
1

环境 Action Data: #{clientid => <<“000016111MSGWZ00588B153755040000”>>,

                   event => 'message.dropped',
                   flags => #{dup => false,retain => false},
                   id => <<"0005F800F9B85A0799EB0D003989005C">>,
                   metadata => #{rule_id => <<"reportFail">>},
                   node => 'emqx@172.16.169.45',
                   payload =>
                       <<"{\"reqId\":\"1680057957077\",\"ts\":\"1680057956143\",\"topic\":\"/subdevice/control/ack\",\"errCode\":0,\"data\":{}}">>,
                   peerhost => <<"172.16.169.47">>,pub_props => #{},
                   publish_received_at => 1680057956850,qos => 0,
                   reason => no_subscribers,timestamp => 1680057956850,
                   topic => <<"/mzgd/event/1678352507528375">>,
                   username => <<"c10351e9490648aabb2b56f94bc15851">>}
    Envs: #{clientid => <<"000016111MSGWZ00588B153755040000">>,
            event => 'message.dropped',
            flags => #{dup => false,retain => false},
            headers =>
                #{peerhost => {172,16,169,47},
                  properties => #{},proto_ver => 3,protocol => mqtt,
                  username => <<"c10351e9490648aabb2b56f94bc15851">>},
            id => <<"0005F800F9B85A0799EB0D003989005C">>,
            metadata => #{rule_id => <<"reportFail">>},
            node => 'emqx@172.16.169.45',
            payload =>
                <<"{\"reqId\":\"1680057957077\",\"ts\":\"1680057956143\",\"topic\":\"/subdevice/control/ack\",\"errCode\":0,\"data\":{}}">>,
            peerhost => <<"172.16.169.47">>,pub_props => #{},
            publish_received_at => 1680057956850,qos => 0,
            reason => no_subscribers,timestamp => 1680057956850,
            topic => <<"/mzgd/event/1678352507528375">>,
            username => <<"c10351e9490648aabb2b56f94bc15851">>}
  • EMQX 版本：
  • 操作系统版本：

重现此问题的步骤

  1. xxx
  2. xxx
  3. xxx

预期行为

实际行为

2

相关问题在上面继续讨论，这里不再重复，故此结贴，