Failed to read latest segment infos on flush – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch fails to read the latest segment information during a flush operation. This could be due to a disk I/O error, insufficient disk space, or a corrupted index. To resolve this issue, you can try the following: 1) Check your disk space and free up space if necessary. 2) Check for any disk I/O errors and fix them. 3) If the index is corrupted, consider restoring it from a backup or reindexing the data. 4) If the problem persists, you may need to restart the OpenSearch node.

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This guide will help you check for common problems that cause the log ” failed to read latest segment infos on flush ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: flush, index.

Log Context

Log “failed to read latest segment infos on flush” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

            // reread the last committed segment infos
            lastCommittedSegmentInfos = store.readLastCommittedSegmentsInfo();
        } catch (Exception e) {
            if (isClosed.get() == false) {
                try {
                    logger.warn("failed to read latest segment infos on flush"; e);
                } catch (Exception inner) {
                if (Lucene.isCorruptionException(e)) {
                    throw new FlushFailedEngineException(shardId; e);


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