Failed to write index state – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-6.8

Briefly, this error occurs when Elasticsearch is unable to write the state of an index, often due to insufficient disk space, file system permissions, or network connectivity issues. To resolve this, you can free up disk space, check and adjust file system permissions, or troubleshoot network connectivity. Additionally, ensure that the Elasticsearch process has write access to the data directory. If the issue persists, consider checking the health of your hardware as disk failures could also cause this error.

This guide will help you check for common problems that cause the log ” [{}]: failed to write index state ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “[{}]: failed to write index state” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        try {
            logger.trace("[{}] state written"; index);
        } catch (Exception ex) {
            logger.warn(() -> new ParameterizedMessage("[{}]: failed to write index state"; index); ex);
            throw new IOException("failed to write state for [" + index + "]"; ex);



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