How To Solve Issues Related to Log – PostIndexUnderLock listener failed

How To Solve Issues Related to Log – PostIndexUnderLock listener failed

Updated: Feb-20

Elasticsearch Version: 1.7-8.0


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To troubleshoot log “PostIndexUnderLock listener failed” it’s important to understand a few problems related to Elasticsearch concepts index, indexing, shard. See bellow important tips and explanations on these concepts

Log Context

Log”postIndexUnderLock listener [{}] failed” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

     public void postIndexUnderLock(Engine.Index index) {
        for (IndexingOperationListener listener : listeners) {
            try {
            } catch (Exception e) {
                logger.warn("postIndexUnderLock listener [{}] failed"; e; listener);

    public void postIndex(Engine.Index index) {

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 Warn While Updating Index Settings  

Analyzer Is Closed Error  

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