# Elasticsearch 2.1.0 update\_mapping **URL:** \ **Category:** Elasticsearch\ **Created:** [December 1, 2015, 9:32pm UTC](https://discuss.elastic.co/t/elasticsearch-2-1-0-update-mapping/36101 "2015-12-01T21:32:54Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![George](https://avatars.discourse-cdn.com/v4/letter/g/71e660/32.png) [@George](https://discuss.elastic.co/u/George)\ **Post date:** [December 1, 2015, 9:32pm UTC](https://discuss.elastic.co/t/elasticsearch-2-1-0-update-mapping/36101/1 "2015-12-01T21:32:54Z")
Hello everybody, I was recently ugrading to es 2.1.0 cluster and java client API. I have a usecase were I constantly add new fields via the update api to some existing index which contains aprox 3000 fields. After upgrading to 2.1.0 ( server + client ) I started noticing ProcessClusterEventTimeoutException[failed to process cluster event (put-mapping .... (it takes more than 30 seconds). Also in the es logs I see a lot of entries containing update\_mapping. However, this slow processing of update\_mapping was not reported with es 1.x. Does anybody know why is this slower with 2.1.0? Thanks! ---
**Author:** ![George](https://avatars.discourse-cdn.com/v4/letter/g/71e660/32.png) [@George](https://discuss.elastic.co/u/George)\ **Post date:** [December 2, 2015, 10:46am UTC](https://discuss.elastic.co/t/elasticsearch-2-1-0-update-mapping/36101/2 "2015-12-02T10:46:28Z")
Ok so to answer my question. Yes something changed, related to the update mapping since es 2.0. "One major change is that dynamically added fields must have their mapping confirmed by the master node before indexing continues" see: [https://www.elastic.co/guide/en/elasticsearch/reference/current/breaking\_20\_mapping\_changes.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/breaking_20_mapping_changes.html) Does anybody know if I can disable this? Thanks! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 5, 2017, 11:34pm UTC](https://discuss.elastic.co/t/elasticsearch-2-1-0-update-mapping/36101/3 "2017-07-05T23:34:12Z")