Problem Note 65302: The RabbitMQ log contains messages similar to "lager_error_logger_h dropped X messages"
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You might encounter an issue in which the RabbitMQ log contains messages similar to the following:
lager_error_logger_h dropped <x> messages in the last second that exceeded the limit of <x> messages/sec
In the message above, <x> refers to the number of messages.
The RabbitMQ log is called rabbit@<hostname>.log, where <hostname> refers to the name of the machine on which RabbitMQ is running. This log is located at /var/log/sas/viya/rabbitmq-server/default.
This warning might occur even when the workload of RabbitMQ is low. In this case, the warning is incorrect and can be ignored.
The incorrect warning occurs due to the following:
- a bug in Lager 3.6.5 used by RabbitMQ 3.7.11 in SAS® Viya® 3.4
- a bug in Lager 3.6.10 used by RabbitMQ 3.7.17 in SAS® Viya® 3.5
The problem is described in the GitHub post, Lager incorrectly counting dropped messages from Error Logger. The problem is solved in Lager 3.7.0
Operating System and Release Information
| Product Family | Product | System | Product Release | SAS Release | ||
| Reported | Fixed* | Reported | Fixed* | |||
| SAS System | SAS Viya | Microsoft® Windows® for x64 | 3.4 | |||
| Microsoft Windows 8 Enterprise 32-bit | 3.4 | |||||
| Microsoft Windows 8 Enterprise x64 | 3.4 | |||||
| Microsoft Windows 8 Pro 32-bit | 3.4 | |||||
| Microsoft Windows 8 Pro x64 | 3.4 | |||||
| Microsoft Windows 8.1 Enterprise 32-bit | 3.4 | |||||
| Microsoft Windows 8.1 Enterprise x64 | 3.4 | |||||
| Microsoft Windows 8.1 Pro 32-bit | 3.4 | |||||
| Microsoft Windows 8.1 Pro x64 | 3.4 | |||||
| Microsoft Windows 10 | 3.4 | |||||
| Microsoft Windows 95/98 | 3.4 | |||||
| Microsoft Windows 2000 Advanced Server | 3.4 | |||||
| Microsoft Windows 2000 Datacenter Server | 3.4 | |||||
| Microsoft Windows 2000 Server | 3.4 | |||||
| Microsoft Windows 2000 Professional | 3.4 | |||||
| Microsoft Windows NT Workstation | 3.4 | |||||
| Microsoft Windows Server 2003 Datacenter Edition | 3.4 | |||||
| Microsoft Windows Server 2003 Enterprise Edition | 3.4 | |||||
| Microsoft Windows Server 2003 Standard Edition | 3.4 | |||||
| Microsoft Windows Server 2003 for x64 | 3.4 | |||||
| Microsoft Windows Server 2008 | 3.4 | |||||
| Microsoft Windows Server 2008 R2 | 3.4 | |||||
| Microsoft Windows Server 2008 for x64 | 3.4 | |||||
| Microsoft Windows Server 2012 Datacenter | 3.4 | |||||
| Microsoft Windows Server 2012 R2 Datacenter | 3.4 | |||||
| Microsoft Windows Server 2012 R2 Std | 3.4 | |||||
| Microsoft Windows Server 2012 Std | 3.4 | |||||
| Microsoft Windows Server 2016 | 3.4 | |||||
| Microsoft Windows Server 2019 | 3.4 | |||||
| Microsoft Windows XP Professional | 3.4 | |||||
| Windows 7 Enterprise 32 bit | 3.4 | |||||
| Windows 7 Enterprise x64 | 3.4 | |||||
| Windows 7 Home Premium 32 bit | 3.4 | |||||
| Windows 7 Home Premium x64 | 3.4 | |||||
| Windows 7 Professional 32 bit | 3.4 | |||||
| Windows 7 Professional x64 | 3.4 | |||||
| Windows 7 Ultimate 32 bit | 3.4 | |||||
| Windows 7 Ultimate x64 | 3.4 | |||||
| Windows Millennium Edition (Me) | 3.4 | |||||
| Windows Vista | 3.4 | |||||
| Windows Vista for x64 | 3.4 | |||||
| Linux for x64 | 3.4 | |||||
| Type: | Problem Note |
| Priority: | low |
| Date Modified: | 2020-01-23 07:39:44 |
| Date Created: | 2020-01-06 01:47:33 |