BWC test failures for MultiVersionRepositoryAccessIT

[mark-vieira]

Our most recent master BWC test run failed against versions 7.0.x and 7.1.x with the same test failures indicating we either made a BWC incompatible change in master or perhaps just the test needs updating.

The build run in question included this commit, which might potentially be related. @original-brownbear any thoughts?

Example build scan: https://gradle-enterprise.elastic.co/s/dpoop7fvn2rwq/tests/failed
Jenkins build with links to each BWC version: https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+bwc/471/

[elasticmachine]

Pinging @elastic/es-distributed (:Distributed/Snapshot/Restore)

[original-brownbear]

@mark-vieira yea I know how to fix this (already did in 7.x) but I'm afraid I will only be able to do so in 10-12h. Will do it right away in my morning sorry for the noise

[mark-vieira]

No rush. These builds only run every 8 hours so we are talking maybe 1 or 2 more failures so hardly much in the way of noise in the grand scheme of things. Thanks, Armin!

[mark-vieira]

@original-brownbear we are getting more failures on the 7.x branch builds against BWC versions 6.5.x and lower.

https://elasticsearch-ci.elastic.co/view/Elasticsearch%207.x/job/elastic+elasticsearch+7.x+bwc/483/

https://gradle-enterprise.elastic.co/s/72ecamxlrgnc4/tests/b25xfi2kvu43g-g5ybnrrraxiry

[original-brownbear]

@mark-vieira ah sorry about that! Will fix it right away in my morning in 12h

[mark-vieira]

Thanks, Armin!

[danielmitterdorfer]

For the sake of completeness: We have two more build failures in:

• https://elasticsearch-ci.elastic.co/view/Elasticsearch%207.x/job/elastic+elasticsearch+7.x+bwc/484/
• https://elasticsearch-ci.elastic.co/view/Elasticsearch%207.x/job/elastic+elasticsearch+7.x+bwc/485/

(omitting build scans as they don't add any new information)