Reading latest Metadata file – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.3-2.9

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Briefly, this error occurs when OpenSearch is unable to read the latest metadata file. This could be due to issues like file corruption, incorrect file permissions, or the file being in use by another process. To resolve this, you could try closing other processes that might be using the file, checking the file’s permissions and ensuring OpenSearch has the necessary access, or restoring the file from a backup if it’s corrupted. If the issue persists, you might need to recreate the metadata file.

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This guide will help you check for common problems that cause the log ” Reading latest Metadata file {} ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index, metadata.

Log Context

Log “Reading latest Metadata file {}” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :


        if (metadataFiles.isEmpty() == false) {
            String latestMetadataFile = metadataFiles.get(0);
  "Reading latest Metadata file {}"; latestMetadataFile);
            remoteSegmentMetadata = readMetadataFile(latestMetadataFile);
        } else {
  "No metadata file found; this can happen for new index with no data uploaded to remote segment store");


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