Martijn van Groningen 8ca33feffd
Fail with correct error if first backing index exists when auto creating data stream (#62862)
Backport #62825 to 7.x branch.

Today if a data stream is auto created, but an index with same name as the
first backing index already exists then internally that error is ignored,
which then result that later in the execution of a bulk request, the
bulk item fails due to that the data stream hasn't been auto created.

This situation can only occur if an index with same is created that
will be the backing index of a data stream prior to the creation
of the data stream.

Co-authored-by: Dan Hermann <danhermann@users.noreply.github.com>
2020-09-24 17:16:34 +02:00
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