Failed to recover from empty translog snapshot – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when Elasticsearch is unable to recover data from an empty transaction log (translog) snapshot. This could be due to corruption or deletion of translog files. To resolve this issue, you can try the following: 1) Restart the Elasticsearch node, which may help in recovering the translog. 2) If the issue persists, you may need to perform a full cluster restart. 3) If the data is not critical, you can delete the corrupted translog files and Elasticsearch will rebuild them. However, this may result in data loss.

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This guide will help you check for common problems that cause the log ” failed to recover from empty translog snapshot ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index, snapshot.

Log Context

Log “failed to recover from empty translog snapshot” class name is ReadOnlyEngine.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 try (ReleasableLock lock = readLock.acquire()) {
 ensureOpen();
 try {
 translogRecoveryRunner.run(this; Translog.Snapshot.EMPTY);
 } catch (final Exception e) {
 throw new EngineException(shardId; "failed to recover from empty translog snapshot"; e);
 }
 }
 l.onResponse(null);
 });
 }

 

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