Term version delta – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.5-7.15

Briefly, this error occurs when there is a mismatch between the version of the document in Elasticsearch and the version that the client is trying to update. This could be due to concurrent updates or a delay in propagating changes. To resolve this issue, you can: 1) Implement a retry logic in your application to handle version conflicts. 2) Use the ‘retry_on_conflict’ option in the update request. 3) If the order of updates is not important, you can disable versioning. 4) If possible, reduce the number of concurrent updates to the same document.

This guide will help you check for common problems that cause the log ” {}; term: {}; version: {}; delta: {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster.

Log Context

Log “{}; term: {}; version: {}; delta: {}” classname is MasterService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                // new cluster state; notify all listeners
                final DiscoveryNodes.Delta nodesDelta = clusterChangedEvent.nodesDelta();
                if (nodesDelta.hasChanges() && logger.isInfoEnabled()) {
                    String nodesDeltaSummary = nodesDelta.shortSummary();
                    if (nodesDeltaSummary.length() > 0) {
                        logger.info("{}; term: {}; version: {}; delta: {}";
                            summary; newClusterState.term(); newClusterState.version(); nodesDeltaSummary);

                logger.debug("publishing cluster state version [{}]"; newClusterState.version());


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