"suspicious processes" from out of rabbit_diagnostics

[sazo...@gmail.com]

Hello everybody.

I've already described my problem (https://groups.google.com/forum/?nomobile=true#!topic/rabbitmq-users/qG7K-bShan0)

Rabbit : 3.6.1

Erlang version: 18.0

OS: debian 8.6

I know about software update however it's not so easy for production software, sometimes this process takes much time.

I could find some details. 

At the moment when client stopped consuming "rabbitmqctl eval 'rabbit_diagnostics:maybe_stuck().'" produced info about 4 "suspicious processes" (stuck.zip)

After this command client resumed consuming and stopped again. The queue wasn't empty. 

Then I restarted my client but no consuming.  New consumers with new ports appeared, but previous ones were displayed in GUI too, though system didn't give info about closed ports. 

Again I tried "rabbitmqctl eval 'rabbit_diagnostics:maybe_stuck().'". There was info about 8 "suspicious processes".

Restart client, number of "suspicious processes" became 12

I attach rmq-log, there are some errors.

In this situation I just want to be sure that old version of rabbit and erlang is a reason of this abnormal state, there willn't such problems after update.

Bets regards, Dmitry

[Michael Klishin]

You are running a version of RabbitMQ that is 15 patch releases behind even the now unsupported 3.6.x version [1].

Erlang 18.0 is known to have bugs that are catastrophic to RabbitMQ [2]. Please upgrade [3].

I only see 4 processes listed and they all have to do with inter-node communication. Early 3.6.x releases didn't have timeouts in several

inter-node communication areas.

1. https://rabbitmq.com/changelog.html

2. https://rabbitmq.com/which-erlang.html

3. https://rabbitmq.com/upgrade.html

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MK

Staff Software Engineer, Pivotal/RabbitMQ