I am currently running a production cluster with ES 1.7 installed. currently I rely on the UpdateByQuery plugin and since the release of ES 2.0 there has not been an update to that plugin to support ES 2.X. I noticed a while back that the functionality is now baked in ES with the new Update By Query API
The only problem that is preventing me from upgrading to the latest ES version is the warning displayed at the top of the API's documentation stating that this API should be considered experimental. I know that changes can be made to the API in future versions and that is fine by me but I was wondering how stable the API currently is for a production cluster.
I have done some small tests with the API and it all seems to be working fine but I was wondering if there are any known issues, limitations or bugs with the current version.