update_by_query.rb in elasticsearch-api-6.0.3

- old
+ new

@@ -59,10 +59,11 @@
       # @option arguments [Boolean] :refresh Should the effected indexes be refreshed?
       # @option arguments [String] :consistency Explicit write consistency setting for the operation (options: one, quorum, all)
       # @option arguments [Integer] :scroll_size Size on the scroll request powering the update_by_query
       # @option arguments [Boolean] :wait_for_completion Should the request should block until the reindex is complete.
       # @option arguments [Float] :requests_per_second The throttle for this request in sub-requests per second. 0 means set no throttle.
+      # @option arguments [Integer] :slices The number of slices this task should be divided into. Defaults to 1 meaning the task isn't sliced into subtasks.
       #
       # @see https://www.elastic.co/guide/en/elasticsearch/reference/master/docs-update-by-query.html
       #
       def update_by_query(arguments={})
         raise ArgumentError, "Required argument 'index' missing" unless arguments[:index]
@@ -107,10 +108,11 @@
           :request_cache,
           :refresh,
           :consistency,
           :scroll_size,
           :wait_for_completion,
-          :requests_per_second ]
+          :requests_per_second,
+          :slices ]
 
         method = HTTP_POST
 
         path   = Utils.__pathify Utils.__listify(arguments[:index]),
                                  Utils.__listify(arguments[:type]),