Some messages remains unacknowledged from consumer which is - GitHub 5 - Now the first pod finishes the first message and consumes the third message -> target drops to 0/1 (avg). to your account, RabbitMQ scaler is using AMQP library and the method to get a total of messages returns only messages with ready status in queue. Toilets and showers are available, and a first aid station is active in season. The average price per square meter is $534/sqft. You switched accounts on another tab or window. I had this issue too. Pull request #700 should fix the problem. 6 - Now downscaling timer starts, because Target is too low. Sign in Once that happens, RabbitMQ will consider the connection and all channels on it closed. because it was stored, its decoding will fail. https://github.com/streadway/amqp/blob/master/channel.go#L837, If the queue has messages with unacknowledged (because are processing in consumer) they will be ignored and the scaler can kill the pod that are processing messages making message returns to queue and create an infinite cycle :(, I'm not sure if it's a bug or a feature. To see all available qualifiers, see our documentation. Oct 9, 2017, 7:04:20 PM to rabbitm. Well occasionally send you account related emails. It will be closed in 7 days if no further activity occurs. Getting following crash logs repeatedly after every 1-2 second. ** Generic server <0.32413.4079> terminating, ** Last message in was {'$gen_cast',{method,{'basic.publish',0,<<>>,<<"amq.rabbitmq.reply-to.g1hkABZyYWJiaXRAZGwzNjBnMTAtMDEtdjAzAAAqeQAAAABhnGrt.TVTqLlu7vlQzO0tsyq11wA==">>,false,false},{content,60,none,<<252,0,30,97,112,112,108,105,99,97,116,105,111,110,47,106,115,111,110,59,99,104,97,114,115,101,116,61,117,116,102,45,56,5,85,84,70,45,56,0,0,1,234,22,120,45,105,116,114,112,45,115,101,114,118,105,99,101,45,99,111,110,116,101,120,116,83,0,0,1,173,123,34,116,101,110,97,110,116,34,58,34,34,44,34,115,101,114,118,105,99,101,73,100,34,58,34,115,101,114,118,105,99,101,46,105,116,114,112,46,116,101,99,104,46,97,119,115,46,99,111,109,109,111,110,34,44,34,115,101,114,118,105,99,101,73,110,115,116,97,110,99,101,73,100,34,58,34,65,55,49,50,57,55,69,55,51,65,66,65,52,50,53,65,57,69,70,51,53,52,67,57,54,54,66,52,56,56,54,66,34,44,34,108,111,103,82,101,115,111,117,114,99,101,66,117,110,100,108,101,34,58,34,99,111,109,46,118,114,116,115,46,105,116,114,112,46,116,101,99,104,110,111,108,111,103,121,46,97,119,115,46,117,116,105,108,46,108,111,99,97,108,101,46,97,119,115,34,44,34,101,118,101,110,116,82,101,115,111,117,114,99,101,66,117,110,100,108,101,34,58,34,99,111,109,46,118,114,116,115,46,105,116,114,112,46,116,101,99,104,110,111,108,111,103,121,46,97,119,115,46,117,116,105,108,46,108,111,99,97,108,101,46,97,119,115,34,44,34,116,97,115,107,82,101,115,111,117,114,99,101,66,117,110,100,108,101,34,58,110,117,108,108,44,34,115,101,114,118,105,99,101,72,111,115,116,34,58,34,100,108,51,54,48,103,49,48,45,48,49,45,118,48,51,46,118,120,105,110,100,105,97,46,118,101,114,105,116,97,115,46,99,111,109,34,44,34,104,111,115,116,73,100,34,58,34,79,83,95,85,85,73,68,58,123,48,48,48,49,48,48,53,48,45,53,54,56,100,45,55,99,97,102,45,48,48,48,48,45,48,48,48,48,48,48,48,48,48,48,48,48,125,34,44,34,114,109,73,100,34,58,34,55,101,50,50,100,54,49,56,45,56,52,97,101,45,52,49,102,52,45,57,99,100,55,45,54,55,57,100,51,97,49,56,52,54,49,56,34,125,27,120,45,105,116,114,112,45,115,101,114,118,105,99,101,45,114,101,115,112,111,110,115,101,99,111,100,101,73,0,0,0,200,2,0,32,54,54,48,68,70,65,55,67,55,70,55,70,52,57,48,68,57,48,69,50,70,68,69,57,70,51,68,70,48,48,55,68>>,rabbit_framing_amqp_0_9_1,[<<"json_message">>]},flow}}, ** When Server state == {ch,{conf,running,rabbit_framing_amqp_0_9_1,1,<0.31840.4079>,<0.31670.4079>,<0.31840.4079>,<<"127.0.0.1:40096 -> 127.0.0.1:5672">>,undefined,{user,<<"guest">>,[administrator],[{rabbit_auth_backend_internal,none}]},<<"/">>,<<"src.common.q.info">>,<0.3918.3968>,[{<<"exchange_exchange_bindings">>,bool,true},{<<"connection.blocked">>,bool,true},{<<"authentication_failure_close">>,bool,true},{<<"basic.nack">>,bool,true},{<<"publisher_confirms">>,bool,true},{<<"consumer_cancel_notify">>,bool,true}],none,1,134217728,1800000,#{},1000000000},{lstate,<0.911.3969>,false},none,2,{1,{[{1,<<"amq.ctag-jr4dExNXbGkS_dHrkPJgg">>,1637820094484,{<0.796.0>,64}}],[]}},#{<0.796.0> => {resource,<<"/">>,queue,<<"src.common.q.info">>}},{state,#{<0.796.0> => #Ref<0.284499808.3633840131.207393>},erlang},#{<<"amq.ctag-jr4dExNXbGkS_dHrkPJgg">> => {{amqqueue,{resource,<<"/">>,queue,<<"src.common.q.info">>},true,false,none,[],<0.796.0>,[],[],[],undefined,undefined,[],[],live,0,[],<<"/">>,#{user => <<"guest">>},rabbit_classic_queue,#{}},{false,1,false,[]}}},#{<0.796.0> => {1,{<<"amq.ctag-jr4dExNXbGkS_dHrkPJgg">>,nil,nil}}},{set,1,16,16,8,80,48,{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[]},{{[],[],[],[],[],[],[],[<0.796.0>],[],[],[],[],[],[],[],[]}}},{state,none,5000,undefined},false,1,{unconfirmed,{0,nil},#{},#{}},[],[],none,flow,[],#{},#Ref<0.284499808.3576954887.30932>}, ** {{case_clause,<<100,0,22,114,97,98,98,105,116,64,100,108,51,54,48,103,49,48,45,48,49,45,118,48,51,0,0,42,121,0,0,0,0,97,156,106,237>>},[{pid_recomposition,from_binary,1,[{file,"src/pid_recomposition.erl"},{line,42}]},{rabbit_direct_reply_to,decode_reply_to_v2,2,[{file,"src/rabbit_direct_reply_to.erl"},{line,69}]},{rabbit_channel,deliver_reply,2,[{file,"src/rabbit_channel.erl"},{line,303}]},{rabbit_exchange,'-route/2-lc$^0/1-0-',2,[{file,"src/rabbit_exchange.erl"},{line,414}]},{rabbit_exchange,route,2,[{file,"src/rabbit_exchange.erl"},{line,415}]},{rabbit_channel,handle_method,3,[{file,"src/rabbit_channel.erl"},{line,1370}]},{rabbit_channel,handle_cast,2,[{file,"src/rabbit_channel.erl"},{line,643}]},{gen_server2,handle_msg,2,[{file,"src/gen_server2.erl"},{line,1067}]}]}, 2021-11-25 11:31:34 =SUPERVISOR REPORT====. The problem: message comes to queue, but it stays in "Unacknowledged" state, it never becomes "Ready". Can we fix this issue with RestApi? By clicking Sign up for GitHub, you agree to our terms of service and $ curl -s localhost:15692/metrics/per-object | grep ^rabbitmq_queue_messages. This is what is probably causing the error. Sometimes multiple instances of a process with an open RabbitMQ connection stay running, one of which may cause a message to get stuck in an unacknowledged state, preventing another instance of the consumer to ever refetch this message. A queueLength of 1 and minPods of 1 results in the following behavior: I had posted this on community group as well: https://groups.google.com/g/rabbitmq-users/c/787VgiHEKNY/m/gq30CkG2BQAJ. RabbitMQ: messages remain "Unacknowledged" - Sarkari Job Alert Few more details: https://github.com/streadway/amqp/blob/master/channel.go#L837, RabbitMQ ignores unacknowledged messages since >=2.0. You do not have permission to delete messages in this group, Either email addresses are anonymous for this group or you need the view member email addresses permission to view the original message, If a consumer is alive, closing its channel (or connection) will requeue all unacknowledged deliveries. AU FIL DU BAIN FREJUS - Frjus, Provence-Alpes-Cte d'Azur - Foursquare You signed in with another tab or window. peer going down is not immediately detected due to how TCP works see the heartbeats guide above. Sign in @googlegroups.com Please see tutorial 2, http://www.rabbitmq.com/confirms.html and http://www.rabbitmq.com/heartbeats.html. I spawn two consumers, and when I CTRL+C one of them, the other running one doesnotreceive the messages that were originally destined to the former consumer. Can you figure out what application published this message? After removing the rogue process, you should see the message jumps to Ready state again. I am not using direct reply-to identifier. that on the server end. Now a new pod is started, that can consume the second message, so currentReplicas increases amd Target drops to 1/1 (avg) keepalive) to detect. Well occasionally send you account related emails. I wanted the related consumer to stop and remove the message from the queue. This issue has been automatically marked as stale because it has not had recent activity. Thank you for your contributions. Which requires that management plugin must be enabled. You can access the RabbitMQ management console (for a local machine this should be available at localhost:15672), and check whether multiple instances get hold of the channel, or if only a single instance is currently active: Find the redundant running task (in this case - java) and terminate it. RabbitMQ-How to remove unacked messages-Part I - Blogger @michaelklishin Should we catch the exception and error out nicely rather than having the large crash log? How do I get the messages to be redelivered after CTRL+C'ing out of one of the consumers? One of the queue gets stuck with no consumer's response. Prior to this I was using rabbitmq version 3.8.9 and erlang version 23.2.4 and everything was working on that setup. 2 - First message arrives -> Taget: 0/1 (avg), since the message is consumed by the pod http://localhost:15672/api/queues/VHOST/QUEUE_NAME, https://github.com/rabbitmq/rabbitmq-server/blob/master/deps/rabbitmq_prometheus/metrics.md, https://rawcdn.githack.com/rabbitmq/rabbitmq-server/v3.8.16/deps/rabbitmq_management/priv/www/api/index.html, https://groups.google.com/d/msgid/rabbitmq-users/4b237f0f-e6fb-42ce-aa11-756eb4a1d85en%40googlegroups.com. This issue has been automatically closed due to inactivity. RabbitMQ: messages remain "Unacknowledged" As described above, that the total messages are used for calculation, not the ack ones. An Unacknowledged message implies that it has been read by your consumer, but the consumer has never sent back an ACK to the RabbitMQ broker to say that it has finished processing it. The best beaches - Provence-Alpes-Cte d'Azur Tourism Rabbitmq unacknowledged or non-consumed message alerts configuration I use Springframework AMQP java plugin with RabbitMQ. Have a question about this project? RabbitMQ works as an intermediary platform that ensures the message is delivered to the right destination. 119 views Thanigai Arasu May 19, 2021, 2:13:49 AM to rabbitmq-users Hi, I would like to configure the alerts/mail communication to group of users when the pre-configured number of message limit. Please suggest the option to implement this. 1 - No messages -> Target: 0/1 (avg) The text was updated successfully, but these errors were encountered: This is very similar to #3751. The text was updated successfully, but these errors were encountered: I had the same problem with our current autoscaler component: I'm not overly familiar with the Spring Framework plugin, but somewhere (for your consumer) you will be declaring your queue, it might look something like this (taken from http://www.rabbitmq.com/tutorials/tutorial-two-java.html): ackMode above is a boolean, by setting it to false, we're explicitly saying to RabbitMQ that my consumer will acknowledge each message it is given. By clicking Sign up for GitHub, you agree to our terms of service and Les Esclamandes beach, 600 meters long, is divided into four distinct areas: a family area, an area . Since direct reply-to "identifiers" are extremely short lived, the vast majority of environments will never run into this. RabbitMQ ignores unacknowledged messages #638 - GitHub Tried erlang versions: 23.3.4.7(Referred logs are from setup having this version) and 23.2.4 to your account. OS: Linux You switched accounts on another tab or window. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. What could be the reason? Since protocol methods (messages) sent are not guaranteed to reach the peer or be successfully processed by it, both publishers and consumers need a mechanism for delivery and processing confirmation. If a client tried to use a previously computed value, e.g. privacy statement. Looking for statistics on the fastest, tallest or longest roller coasters? Crazy Mouse - Lunapark Frjus (Frjus, Provence-Alpes-Cte d'Azur, France) I guess this is commonly enabled. RabbitMQ: messages remain "Unacknowledged" - Stack Overflow I use Springframework AMQP java plugin with RabbitMQ. You signed in with another tab or window. Soon after the worker dies all unacknowledged messages will be redelivered. I have upgraded rabbitmq-server from 3.8.9 to 3.8.25. See photos, tips, similar places specials, and more at AU FIL DU BAIN FREJUS To acknowledge a message you would do something like this: If you can post some of your consumer code then I might be able to help furtherbut in the mean time take a look at BlockingQueueConsumer specifically: the constructor you will see that you can set the AcknowledgeMode and also take a look at the nextMessage() this will return a Message object which contains a method called getDeliveryTag() this will return a Long which is the ID that you would send back on the basicAck, Just to add my 2 cents for another possible reason for messages staying in an unacknowledged state, even though the consumer makes sure to use the basicAck method-. 4 - Third message arrives -> Target 2/1 (avg). Have a question about this project? Those that do must avoid using those older response identifiers. The most expensive home for sale in Frejus, France is a 22,604 sqft villa with a listing price of $29,000,000. My Java application sends messages to RabbitMQ exchange, then exchange redirects messages to binded queue. 6 comments otherpirate commented Feb 21, 2020 Create a queue Publish 3 messages in the queue Consume one message and do not confirm (ACK or NACK), the message will be in unacknowledged status. RabbitMQ: messages remain "Unacknowledged" Ask Question Asked 10 years, 10 months ago Modified 6 years, 3 months ago Viewed 60k times 28 My Java application sends messages to RabbitMQ exchange, then exchange redirects messages to binded queue. https://groups.google.com/g/rabbitmq-users/c/787VgiHEKNY/m/jdNXLhUtBwAJ. You do not have permission to delete messages in this group, Either email addresses are anonymous for this group or you need the view member email addresses permission to view the original message. The RabbitMQ Unacked Messages get piled up in the queue which creates difficulty in a later stage. after which all unacknowledged messages will be requeued. Run Keda, the total of messages will be 2 (should be 3) I would except that on receiving the second message a new pod would start. Everything else is up to your monitoring system - query/scrape one of these endpoints, compare with thresholds and send an alert. We are trying to migrate to Keda and I will be glad to help with coding Thanks, Michael. Some messages remains unacknowledged from consumer which is giving reached_max_restart_intensity error. These messages are unacknowledged. Hi, I would like to configure the alerts/mail communication to group of users when the pre-configured number of message limit is surpassed on the message consumption or un-acknowledged. Direct reply-to value encoding has changed in 3.8.13. If a consumer is alive, closing. Certain process just takes a bit longer to ack. No of nodes: 1 With this behaviour the scaler is more or less useless. Client: spring-amqp-2.3.11 which uses amqp-client-5.9.0. I have also tried upgrading rabbitmq-server from 3.8.9 to 3.9.8 with same erlang version 23.2.4 and got similar issue. Using this code we can be sure that even if you kill a worker using CTRL+C while it was processing a message, nothing will be lost. Same occures if there are 6 messages, except the target will be 200m/1 (avg) on step 5. https://groups.google.com/g/rabbitmq-users/c/787VgiHEKNY/m/gq30CkG2BQAJ, Direct reply-to value encoding has changed in. Staff Software Engineer, Pivotal/RabbitMQ. I'm following the following tutorial to the letter:https://www.rabbitmq.com/tutorials/tutorial-two-java.html. If a consumer process dies, it will take heartbeats (or TCP stack, via e.g. Homes for sale in Frejus, France have an average listing price of $978,435 and range in price between $504,998 and $31,562,427. Saint-Aygulf is one of the largest beaches in the region, with a length of 800 meters. 3 - Second message arrives -> Target 1/1 (avg). Only the rabbitmq management rest api provides this metrics. How do I have RabbitMQ redeliver unacknowledged messages? - Google Groups The Basics Systems that use a messaging broker such as RabbitMQ are by definition distributed. I found the same issue and from my point of view it comes from a difference in setting the queue treshhold and how the hpa is calculated from that value. Consume one message and do not confirm (ACK or NACK), the message will be in unacknowledged status. Already on GitHub? I'm not overly familiar with the Spring Framework plugin, but somewhere (for your consumer) you will be declaring your queue, it might look something like this . mbogus/kube-amqp-autoscale#11. Note that. Already on GitHub? I am using spring-amqp-2.3.11 as client and I have also set AmqpTemplate.setUseDirectReplyToContainer(false) in my code. hi, I have upgraded rabbitmq-server from 3.8.9 to 3.8.25. Nothing happens privacy statement. We read every piece of feedback, and take your input very seriously. Its exposure to the wind makes it a popular windsurfing and kitesurfing spot. Luxury Homes for Sale in Frjus, Provence Alpes Cte D'azur, France An Unacknowledged message implies that it has been read by your consumer, but the consumer has never sent back an ACK to the RabbitMQ broker to say that it has finished processing it. If this flag was set to true, then you wouldn't be seeing the Unacknowledged count in RabbitMQ, rather as soon as a consumer has read the message off (i.e it has been delivered to the consumer it will remove it from the queue). Find it all and much more with the interactive Roller Coaster Database. To unsubscribe from this group and stop receiving emails from it, send an email to, https://www.rabbitmq.com/tutorials/tutorial-two-java.html, rabbitmq-users+unsubscribe@googlegroups.com. To see all available qualifiers, see our documentation. I would except that I can set the desired value to a floating value, like 700m, to get a target of x/700m. Working With RabbitMQ Unacked Messages Simplified 101 July 01, 2022 I got a situation where a message remained unacknowledged in a RabbitMQ queue. Getting following crash logs repeatedly after every 1-2 seconds. An Unacknowledged message implies that it has been read by your consumer, but the consumer has never sent back an ACK to the RabbitMQ broker to say that it has finished processing it. Captured message which got stuck in my queue: @SwapnilBhusari as you see the message has reply_to set. In my use case, it's a bug, but maybe it's should be optional. http://www.rabbitmq.com/tutorials/tutorial-two-java.html. We read every piece of feedback, and take your input very seriously. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Should we create a new parameter/configuration to do that? Prior to this I was using rabbitmq version 3.8.9 and erlang version 23.2.4 and everything was working on that setup. Run Keda, the total of messages will be 2 (should be 3). Through the Management Portal Let me walk you through the steps to get this done. Consumer Acknowledgements and Publisher Confirms RabbitMQ The simple solution went to use RestAPI So in the case of ungracefully killing the consumer process, the redelivery depends on the TCP socket timeout (short of heartbeat)?