How To Solve Issues Related to Log – Failed to send allocate dangled

How To Solve Issues Related to Log – Failed to send allocate dangled

Updated: Jan-20

Elasticsearch Version: 1.7-8.0


Before you begin reading this guide try our beta Elasticsearch Health Check-Up it analyses JSON’s to provide personalized recommendations that can improve your clusters performance.

To troubleshoot log “Failed to send allocate dangled” it’s important to understand a few problems related to Elasticsearch concepts dangled, dangling, indices. See bellow important tips and explanations on these concepts

Log Context

Log”Failed to send allocate dangled” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

               "failed to send allocated dangled"; e);
        } catch (Exception e) {
            logger.warn("failed to send allocate dangled"; e);

    public void clusterChanged(ClusterChangedEvent event) {

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 Es Cluster Not Importing Dangled In  

Github Issue Number 27073  

Es Nodes Crashing Failed To Send Fa

About Opster

Opster detects root causes of Elasticsearch problems, provides automated recommendations and can perform various actions to prevent issues and optimize performance

Find Configuration Errors

Analyze Now