TCP output error after upgradation of HF

[uagraw01]

Hello Splunkers!!

When i am upgrading my web HF from 8.0.0 to 8.1.2 then i am getting below error. Please let me what is available workaround for the below issue.

The TCP output processor has paused the data flow. Forwarding to host_dest=<indexer_name> inside output group splunkcloud from host_src=<HF_NAME> has been blocked for blocked_seconds=1970. This can stall the data flow towards indexing and other network outputs. Review the receiving system's health in the Splunk Monitoring Console. It is probably not accepting data.

[venkatasri]

Hi @uagraw01 

the target index queue is blocked check the indexer status using MC and do the necessary fix so the HF will start resuming forwarding events to indexers.

you can check the ./splunk list forward-server on HF is there are at least one active indexer.

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An upvote would be appreciated if  this reply helps!

[Stefanie]

Probably not helpful but I have had this error a few times in the past. I just restart the Indexer and it works as normal. I don't know what causes this, I just fixed it. haha