How To Solve Issues Related to Log – no longer master while failing shard

How To Solve Issues Related to Log – no longer master while failing shard

Updated: Jan-20

Elasticsearch Version: 1.7-8.0

Background

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To troubleshoot log “no longer master while failing shard” it’s important to understand a few problems related to Elasticsearch concepts cluster, master, shard. See bellow important tips and explanations on these concepts

Log Context

Log”{} no longer master while failing shard [{}]” classname is ShardStateAction.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                         }
                    }

                    
Override
                    public void onNoLongerMaster(String source) {
                        logger.error("{} no longer master while failing shard [{}]"; request.shardId; request);
                        try {
                            channel.sendResponse(new NotMasterException(source));
                        } catch (Exception channelException) {
                            logger.warn(() ->
                                new ParameterizedMessage("{} failed to send no longer master while failing shard [{}]";



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 ElasticSearch: Unassigned Shards, how to fix? 203.11 K 152

My Cluster Always Yellow  

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