rolling upgrade tests (80_data_frame_jobs_crud) are failing

[przemekwitek]

Two failures today:

Build | 20191022094655-F9FE3750
Log | https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+7.x+bwc/BWC_VERSION=7.2.0,nodes=centos-7&&immutable/233/console
Build Scans | https://gradle-enterprise.elastic.co/s/tsrfkk4svewle

Build | 20191022094654-1329FC63
Log | https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+7.x+bwc/BWC_VERSION=7.2.1,nodes=centos-7&&immutable/233/console
Build Scans | https://gradle-enterprise.elastic.co/s/hg4o5qjzu7kgm

Is it somehow related to this commit? 8003677

[elasticmachine]

Pinging @elastic/ml-core (:ml/Transform)

[hendrikmuhs]

@przemekwitek Thanks!

It's probably caused by this #48302, fortunately not backported to 7.4 yet. I am looking into it.

[przemekwitek]

Another instance:

Build | 20191022105833-1A0A06B3
Log | https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+7.x+default-distro+bwc/BWC_VERSION=7.2.0,nodes=centos-7&&immutable/229/console
Build Scans | https://gradle-enterprise.elastic.co/s/nm7af4pesba6s

[hendrikmuhs]

fixed with #48344