Mapping update rejected by primary – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your OpenSearch operation.

Briefly, this error occurs when there’s an attempt to update the mapping of an index on a replica shard, but the update is rejected by the primary shard. This could be due to inconsistencies between the primary and replica shards. To resolve this, you can try the following: 1) Reindex the data to ensure consistency across all shards. 2) Check for any network issues that might be causing delays in updating the replica shards. 3) Ensure that the mapping update is not conflicting with existing data in the index.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” {} mapping update rejected by primary ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: bulk, mapping.

Log Context

Log “{} mapping update rejected by primary” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                        new CompressedXContent(result.getRequiredMappingUpdate(); ToXContent.EMPTY_PARAMS);
            } catch (Exception e) {
       -> new ParameterizedMessage("{} mapping update rejected by primary"; primary.shardId()); e);
                onComplete(exceptionToResult(e; primary; isDelete; version); context; updateResult);
                return true;

            mappingUpdater.updateMappings(result.getRequiredMappingUpdate(); primary.shardId(); new ActionListener() {


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?

Get expert answers on Elasticsearch/OpenSearch