Upgrade mode noop – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8-8.9

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Briefly, this error occurs when Elasticsearch is set to “noop” (No Operation) during an upgrade process. This means that no changes will be made to the index, which can cause issues if updates are needed. To resolve this, you can change the upgrade mode to a different setting that allows changes. Alternatively, you can manually update the index if necessary. Also, ensure that the Elasticsearch version you’re upgrading to is compatible with your current setup to avoid such issues.

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This guide will help you check for common problems that cause the log ” Upgrade mode noop ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, upgrade.

Log Context

Log “Upgrade mode noop” classname is TransportSetUpgradeModeAction.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            return;
        }

        // Noop; nothing for us to do; simply return fast to the caller
        if (request.isEnabled() == MlMetadata.getMlMetadata(state).isUpgradeMode()) {
            logger.info("Upgrade mode noop");
            isRunning.set(false);
            listener.onResponse(AcknowledgedResponse.TRUE);
            return;
        }

 

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