connection_write_error received periodically when calling delete/rename

[stewartie4]

Multiple blobbers are experiencing this issue periodically across multiple networks.

Given a rename request to /v1/file/rename such as

Or a delete request to /v1/file/upload such as

We are periodically getting returned the following 400 response:

{
"code": "connection_write_error",
"error": "connection_write_error: Error writing the connection meta data"
}

This is periodic - the exact same request will pass after a few retries.

See: https://0chain.github.io/0chain/dev/2021-08-04_23.22.14/index.html for details

[stewartie4]

This no longer seems to be periodic and is filing consistently

https://0chain.github.io/0chain/beta/2021-08-23_17.05.29/index.html

[kushthedude]

This is fixed in grpc deployment @stewartie4 , we will soon make grpc as the default branch so this is gonna be fixed as well

[stewartie4]

Nice! What was the issue?

[kushthedude]

I guess its this PR only #273 . I didnt merge this PR into my grpc because it doesn't had any unit tests, I made a review on to add unit-tests but seemed like change was too trivial for author. So I left it until the unit tests for the change were added.

[kushthedude]

The PR was reverted so shall the issue too, do check again if it occuers