Creating index cause templates shards mappings – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.7

Briefly, this error occurs when Elasticsearch is trying to create an index but encounters issues with the templates, shards, or mappings. This could be due to incorrect configurations or syntax errors in the templates or mappings. To resolve this, you should first check the syntax and structure of your templates and mappings. Ensure they are correctly formatted and compatible with your Elasticsearch version. Secondly, check your shard settings. Too many shards can cause performance issues and errors. Adjust the number of shards if necessary. Lastly, check your Elasticsearch logs for more detailed error information.

In addition we recommend you run the Elasticsearch Template Optimizer to fix problems in your data modeling.

It will analyze your templates to detect issues and improve search performance, reduce indexing bottlenecks and optimize storage utilization. The Template Optimizer is free and requires no installation.

Log Context

Log “[{}] creating index; cause [{}]; templates {}; shards [{}]/[{}]; mappings {}” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            } catch (Exception e) {
                removalExtraInfo = "failed to build index metadata";
                throw e;

  "[{}] creating index; cause [{}]; templates {}; shards [{}]/[{}]; mappings {}";
                request.index(); request.cause();;
                indexMetaData.getNumberOfShards(); indexMetaData.getNumberOfReplicas(); mappings.keySet());



How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?