KB90350
Published: August 24, 2022
Revision: 4.0

MQTT Service may fail to connect (out of memory)


Applies To:

Firmware for the following groov EPICs:

  • GRV-EPIC-PR1
  • GRV-EPIC-PR2
Firmware for the following groov RIOs:
  • GRV-R7-MM1001-10
  • GRV-R7-MM2001-10
  • GRV-R7-I1VAPM-3

Versions Affected:

For groov EPICs: All versions prior to 3.4.1
For groov RIOs: All versions prior to 3.4.1

Resolved In Version:

For groov EPICs: 3.4.1
For groov RIOs: 3.4.1


Symptoms:

You may have this issue if you observe any of the following:

  • MQTT fails to connect to an MQTT service with the error "MQTT Con: watermon java.lang.OutOfMemoryError?: unable to create new native thread.”
  • The MQTT error log has a message such as “Out of Memory exception…”. The service eventually restarts.

Resolution:

Opto 22 has resolved this issue.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com


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