Dimitris Athanasiou c1b0bfd74a
[7.x][ML] Unwrap exception causes before calling instanceof (#47676) (#47724)
When exceptions could be returned from another node, the exception
might be wrapped in a `RemoteTransportException`. In places where
we handled specific exceptions using `instanceof` we ought to unwrap
the cause first.

This commit attempts to fix this issue after searching code in the ML
plugin.

Backport of #47676
2019-10-08 16:02:47 +03:00
..