Exception while listing metadata files – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.9-2.9

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Briefly, this error occurs when OpenSearch encounters an issue while trying to list metadata files. This could be due to insufficient permissions, corrupted metadata files, or a problem with the file system. To resolve this issue, you can try the following: 1) Check and adjust the permissions of the metadata files and their directory. 2) Verify the integrity of the metadata files. If they are corrupted, restore them from a backup. 3) Check the file system for errors and fix them if any are found.

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This guide will help you check for common problems that cause the log ” Exception while listing metadata files ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index, metadata.

Log Context

Log “Exception while listing metadata files” classname is TranslogTransferManager.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :

                } catch (IOException e) {
                    logger.error(() -> new ParameterizedMessage("Exception while reading metadata file: {}"; filename); e);
            }; e -> {
                logger.error(() -> new ParameterizedMessage("Exception while listing metadata files"); e);
                exceptionSetOnce.set((IOException) e);


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