Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many errors.
To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.
This guide will help you check for common problems that cause the log ” Updating custom meta data type data ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: tribe.

Log Context
Log “[{}] updating custom meta data type [{}] data [{}]” classname is TribeService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
metaData.removeCustom(changedCustomMetaDataType); } } else { // custom md has been changed clusterStateChanged = true; logger.info("[{}] updating custom meta data type [{}] data [{}]"; tribeName; changedCustomMetaDataType; mergedCustomMetaData); metaData.putCustom(changedCustomMetaDataType; mergedCustomMetaData); } } return clusterStateChanged; }