Failed to load state file from a stale deleted index – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-1.1

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Briefly, this error occurs when OpenSearch tries to load the state file from an index that has already been deleted. This could be due to a timing issue or a synchronization problem between nodes. To resolve this issue, you can try restarting the OpenSearch nodes to refresh the state. If the problem persists, you may need to manually delete the stale index files from the nodes’ data directories. Always ensure to back up your data before performing such operations to prevent data loss.

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This guide will help you check for common problems that cause the log ” [{}] failed to load state file from a stale deleted index; ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: indices.

Log Context

Log “[{}] failed to load state file from a stale deleted index;” classname is IndicesService.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                metadata = metaStateService.loadIndexState(index);
                if (metadata == null) {
                    return null;
                }
            } catch (Exception e) {
                logger.warn(() -> new ParameterizedMessage("[{}] failed to load state file from a stale deleted index; " +
                    "folders will be left on disk"; index); e);
                return null;
            }
            final IndexSettings indexSettings = buildIndexSettings(metadata);
            try {

 

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