Log Updating number-of-replicas to for indices – How To Solve Related Issues



Log Updating number-of-replicas to for indices – How To Solve Related Issues

Opster Team

Feb-20, Version: 1.7-8.0



Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up  which can resolve issues causing many log errors (free and no installation required)

 

This guide will help you check for common problems that cause the log “Updating number-of-replicas to for indices” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: cluster, indices, metadata, settings.


Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to discover the cause of many errors and provides suitable actionable recommendations. 

Log Context

Log”updating number_of_replicas to [{}] for indices {}” classname is MetaDataUpdateSettingsService.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 
                int updatedNumberOfReplicas = openSettings.getAsInt(IndexMetaData.SETTING_NUMBER_OF_REPLICAS; -1);
                if (updatedNumberOfReplicas != -1) {
                    routingTableBuilder.updateNumberOfReplicas(updatedNumberOfReplicas; actualIndices);
                    metaDataBuilder.updateNumberOfReplicas(updatedNumberOfReplicas; actualIndices);
                    logger.info("updating number_of_replicas to [{}] for indices {}"; updatedNumberOfReplicas; actualIndices);
                }

                ClusterBlocks.Builder blocks = ClusterBlocks.builder().blocks(currentState.blocks());
                Boolean updatedReadOnly = openSettings.getAsBoolean(IndexMetaData.SETTING_READ_ONLY; null);
                if (updatedReadOnly != null) {




 

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Updating the default index number_of_replicas setting for new indices -views 14.40 K ,score 12

How to (persistently) update the index.number_of_replicas setting in Elasticsearch without restarting the cluster? -views   6.66 K,score 2

 

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