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doc-exports/docs/dms_rocketmq/umn/hrm_faq_023.html
chenjunjie cd96953687 RocketMQ UMN 20250723 version 
Reviewed-by: Liudmila Denisova <ldenisov@noreply.gitea.eco.tsi-dev.otc-service.com>
Co-authored-by: chenjunjie <chenjunjie@huawei.com>
Co-committed-by: chenjunjie <chenjunjie@huawei.com>
2025-09-04 09:57:06 +00:00

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How Do I Handle Instance Connection Failure "RemotingTooMuchRequestException: sendDefaultImpl call timeout"

Symptom

Connecting to a RocketMQ instance failed. The error message is "RemotingTooMuchRequestException: sendDefaultImpl call timeout".

Possible Cause

The security group does not allow the service port.

Solution

  1. On the instance overview page on the RocketMQ console, obtain the port in Allow Access To in the Network area.
  2. Click the security group name to go to the security group details page.
  3. Add an inbound rule to allow the port obtained in 1.
Parent topic: Connection FAQs