# Apache Flink 1.2 - Client is not connected to any Elasticsearch nodes **URL:** \ **Category:** Elasticsearch\ **Created:** [March 15, 2017, 9:48am UTC](https://discuss.elastic.co/t/apache-flink-1-2-client-is-not-connected-to-any-elasticsearch-nodes/78674 "2017-03-15T09:48:32Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Ferixx](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ferixx/32/16359_2.png) [@Ferixx](https://discuss.elastic.co/u/Ferixx)\ **Post date:** [March 15, 2017, 9:48am UTC](https://discuss.elastic.co/t/apache-flink-1-2-client-is-not-connected-to-any-elasticsearch-nodes/78674/1 "2017-03-15T09:48:32Z")
Hello everyone! I'm new to ElasticSearch and I choosed it in order to perform data stream processing with Apache Flink using it as a Sink. Because Flink 1.2 has a connector only for the 2.x version of ES, i'm using a proper docker image (elasticsearch:2.4.4-alpine). I followed the [example](https://ci.apache.org/projects/flink/flink-docs-release-1.2/dev/connectors/elasticsearch2.html#installing-elasticsearch-2x) on the docs using "elasticsearch" as `cluster.name` (being the default one) and `127.0.0.1:9200` as node address. I launch my docker image with `docker run -p 9200:9200 -e host.name=127.0.0.1 elasticsearch:2.4.4-alpine`. Sometimes the node receives something but it results in an IllegalArgumentException: empty text. What is my mistake? Thank you very much for your time! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [April 12, 2017, 9:48am UTC](https://discuss.elastic.co/t/apache-flink-1-2-client-is-not-connected-to-any-elasticsearch-nodes/78674/2 "2017-04-12T09:48:39Z")
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