Recovery with same target already registered waiting for

Recovery with same target already registered waiting for – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1-1.1

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Briefly, this error occurs when OpenSearch is trying to recover a shard but finds that a recovery process for the same shard is already in progress. This could be due to a network glitch, node failure, or a slow recovery process. To resolve this issue, you can try the following: 1) Increase the recovery speed limit to speed up the recovery process. 2) Check the health of your nodes and network to ensure they are functioning properly. 3) If the issue persists, you may need to manually cancel the ongoing recovery process and restart it.

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This guide will help you check for common problems that cause the log ” recovery with same target already registered; waiting for ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: recovery, indices.

Log Context

Log “recovery with same target already registered; waiting for” class name is PeerRecoverySourceService.java. We extracted the following from OpenSearch source code for those seeking an in-depth context :

 */
 synchronized Tuple addNewRecovery(StartRecoveryRequest request;
 IndexShard shard) {
 for (RecoverySourceHandler existingHandler : recoveryHandlers.keySet()) {
 if (existingHandler.getRequest().targetAllocationId().equals(request.targetAllocationId())) {
 throw new DelayRecoveryException("recovery with same target already registered; waiting for " +
 "previous recovery attempt to be cancelled or completed");
 }
 }
 final Tuple handlers = createRecoverySourceHandler(request; shard);
 recoveryHandlers.put(handlers.v1(); handlers.v2());

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