Failed to load metadata – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch is unable to retrieve the necessary metadata for a specific operation. This could be due to a variety of reasons such as network issues, incorrect configuration, or issues with the underlying storage system. To resolve this issue, you can try the following: 1) Check your network connectivity and ensure that OpenSearch can communicate with the metadata source. 2) Verify your OpenSearch configuration to ensure it’s correctly set up to retrieve metadata. 3) Investigate the health and status of your storage system, as it may be causing the metadata retrieval to fail.

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This guide will help you check for common problems that cause the log ” failed to load metadata ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: cluster, admin, metadata.

Log Context

Log “failed to load metadata” class name is We extracted the following from OpenSearch source code for those seeking an in-depth context :

 snapshotMapBuilder.put(snapshot; unmodifiableMap(shardMapBuilder));
 return new NodeSnapshotStatus(clusterService.localNode(); unmodifiableMap(snapshotMapBuilder));
 } catch (Exception e) {
 throw new OpenSearchException("failed to load metadata"; e);
 }  /**
 * Inner Request


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