Exception replicating marking as failed – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.9-2.9

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Briefly, this error occurs when OpenSearch encounters an issue while trying to replicate data across different nodes in a cluster. This could be due to network issues, node failures, or insufficient resources. To resolve this, you can check the health of your nodes and ensure they have enough resources. If it’s a network issue, verify your network settings. Also, consider adjusting the number of replicas for your indices based on the size and capacity of your cluster. Lastly, check your OpenSearch logs for more detailed error information.

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This guide will help you check for common problems that cause the log ” Exception replicating {} marking as failed. ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: indices, replication.

Log Context

Log “Exception replicating {} marking as failed.” classname is SegmentReplicationTargetService.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :


            public void onFailure(Exception e) {
                logger.error(() -> new ParameterizedMessage("Exception replicating {} marking as failed."; target.description()); e);
                if (e instanceof OpenSearchCorruptionException) {
                    onGoingReplications.fail(replicationId; new ReplicationFailedException("Store corruption during replication"; e); true);
                onGoingReplications.fail(replicationId; new ReplicationFailedException("Segment Replication failed"; e); false);


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