Is there a way in elasticsearch using JAVA API to get only the ids of the
documents returned for a give query.
SearchResponse sr =
esClient.prepareSearch(index).setSize(resultSize).setQuery(q).setScroll(new
TimeValue(10000)).setQuery(fqb).setFetchSource(false).get();
but I get empty hits (`sr.getHits().hits[].length == 0`) althouh the total
count of returned hits is 0 (`sr.getHits().getTotalHits == 2`). I
understand that nothing is returned by elasticsearch because I set fetch
source to false, but the ids should somehow be available. My current
solution is:
SearchResponse sr =
esClient.prepareSearch(index).setSize(resultSize).setQuery(q).setScroll(new
TimeValue(10000)).setQuery(fqb).srb.setFetchSource("_id", null).get();
However I think that gets the _id field from source, and for speed I would
like to avoid this if possible.
Thanks,
Ilija
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