Ignoring invalid index setting with value archiving – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-1.1

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Briefly, this error occurs when OpenSearch encounters an invalid index setting. The setting is being ignored because its value is not recognized or supported by OpenSearch. To resolve this issue, you should first identify the invalid setting and its value from the error message. Then, you can either remove this setting if it’s not necessary or replace it with a valid one. Make sure to validate your settings against the OpenSearch documentation to ensure they are correct and supported. If the issue persists, consider resetting your index settings to their default values.

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This guide will help you check for common problems that cause the log ” {} ignoring invalid index setting: [{}] with value [{}]; archiving ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index, cluster, metadata.

Log Context

Log “{} ignoring invalid index setting: [{}] with value [{}]; archiving” classname is MetadataIndexUpgradeService.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :

        final Settings settings = indexMetadata.getSettings();
        final Settings upgrade = indexScopedSettings.archiveUnknownOrInvalidSettings(
            e -> logger.warn("{} ignoring unknown index setting: [{}] with value [{}]; archiving";
                indexMetadata.getIndex(); e.getKey(); e.getValue());
            (e; ex) -> logger.warn(() -> new ParameterizedMessage("{} ignoring invalid index setting: [{}] with value [{}]; archiving";
                indexMetadata.getIndex(); e.getKey(); e.getValue()); ex));
        if (upgrade != settings) {
            return IndexMetadata.builder(indexMetadata).settings(upgrade).build();
        } else {
            return indexMetadata;


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