MetaData#concreteIndices to throw exception with a single index argument if allowNoIndices == false #6137
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Fixed MetaData#concreteIndices to throw exception with a single index argument in case allowNoIndices == false and ignoreUnavailable == true.
The current behaviour is inconsistent as 2 or more non existing indices would cause an exception to be thrown:
On the other hand
returns 0 results and no exception regardless of the
allow_no_indices
value.Took also the chance to improve the javadocs for
IndicesOptions
class.