BulkRequestBuilder throws this exception:
java.lang.IllegalArgumentException: The number of object passed must be even but was [1]
when invoking it via:
bulkRequest.add(new IndexRequest(:"indexName", "typeName", null).source(json));
This has worked in pre-60 versions without any deprecation warnings.
The issue is resolved if invoked with the source type indicator as:
bulkRequest.add(new IndexRequest(:"indexName", "typeName", null).source(json,XContentType.json));