Index index has no active shard copy – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.16-8.9

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Briefly, this error occurs when Elasticsearch cannot find an active shard copy for the specified index. This could be due to a number of reasons such as the index being deleted, a node failure, or a network partition. To resolve this issue, you can try to restore the index from a snapshot, ensure that the cluster health is green, or check the network connectivity between the nodes. If the index is not needed, you can also consider deleting it to avoid this error.

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This guide will help you check for common problems that cause the log ” index [” + index + “] has no active shard copy ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: shard, index.

Log Context

Log “index [” + index + “] has no active shard copy” class name is RequestDispatcher.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 for (String index : indices) {
 final GroupShardsIterator shardIts = clusterService.operationRouting()
 .searchShards(clusterState; new String[] { index }; null; null; null; null);
 final IndexSelector indexResult = new IndexSelector(shardIts);
 if (indexResult.nodeToShards.isEmpty()) {
 onIndexFailure.accept(index; new NoShardAvailableActionException(null; "index [" + index + "] has no active shard copy"));
 } else {
 this.indexSelectors.put(index; indexResult);
 }
 }
 }

 

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