Hi Madhukar - with the current Elasticsearch sink in Flink 1.0.0 [1], I don't think an upsert is possible, since IndexRequestBuilder can only return an IndexRequest.
In Flink 1.1, the Elasticsearch 2.x sink [2] provides a RequestIndexer [3] that you can pass an UpdateRequest to do an upsert. Thanks, Zach [1] https://ci.apache.org/projects/flink/flink-docs-release-1.0/apis/streaming/connectors/elasticsearch.html [2] https://ci.apache.org/projects/flink/flink-docs-master/apis/streaming/connectors/elasticsearch2.html [3] https://ci.apache.org/projects/flink/flink-docs-master/api/java/org/apache/flink/streaming/connectors/elasticsearch2/RequestIndexer.html On Mon, Mar 28, 2016 at 2:18 PM Madhukar Thota <madhukar.th...@gmail.com> wrote: > Is it possible to do Upsert with existing flink-elasticsearch connector > today? >