This is an old thread, but I have a variation on the same question: I've
seen various recommendations to drop and recreate indexes rather than
deleting all documents. I just want to know if there is anything in
elasticsearch that maps to IndexWriter.deleteAll, since that is an
efficient way to empty an index without having to recreate it. It would be
convenient if say deleteByQuery("*:*") were to cause that: does it?
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