"NoMethodError: undefined method `bytesize' for nil:NilClass" in random circumstances on 4.2.3

[tylercrocker]

[GEM_ROOT]/gems/redis-4.2.3/lib/redis/connection/ruby.rb:86:in `block in _write_to_socket'

I'm getting a no method error on nil when calling data.bytesize.

This appears to happen very randomly, but once it happens for a given call it continues to happen.

I noticed this because some recaching logic we use on our site where we periodically use a worker to recache about 6,000 pages or so. Roughly a dozen pages would get locked on this error. If the page was uncached and I manually tried to cache it it would continue to do this until the following day where I'd get a different set of pages that erred out.

This does not happen when I roll back to version 4.2.2

I don't have a way to readily replicate this outside of our system and I was not able to replicate it locally, but any insight would be appreciated.

For now I'm just rolling us back to 4.2.2

[byroot]

Thanks for the report, this is likely a bug in #960 or #926 I'll try to figure it out.

Any additional information allowing to repro would be welcome. Also please submit a longer backtrace. you don't have to include parts that come from your app, but the other frames from redis-rb would help.

cc @ioquatix

[byroot]

Oh and you ruby version too please.

[byroot]

This should be fixed in 4.2.3

[cdmo]

@byroot did you mean to say this is fixed in 4.2.5? We saw this in 4.2.3 as well and upgrading to 4.2.5 fixed it.

[byroot]

Indeed. Sorry.