Propagate mapping.single_type setting on shrinked index #29202
Merged
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The index.mapping.single_type setting is not propagated when shrinking an index created in 5.x.
This breaks search/get on the shrinked index because this setting is used to choose
whether
_uid
or_id
field should be used as the primary key.This commit fixes this bug by copying the setting in the shrinked index.