Deleted previously created but not yet committed next generation This can happen due to a tragic exception when creating a new generation – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Briefly, this error occurs when Elasticsearch tries to create a new generation of data but encounters a severe error, known as a tragic exception. This could be due to issues like disk errors, file corruption, or insufficient disk space. To resolve this, you can try to free up disk space, check for file corruption, or look into the Elasticsearch logs for more details about the tragic exception. If the issue persists, consider restarting the Elasticsearch node or, in worst-case scenarios, restoring data from a backup.

This guide will help you check for common problems that cause the log ” deleted previously created; but not yet committed; next generation [{}]. This can happen due to a tragic exception when creating a new generation ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “deleted previously created; but not yet committed; next generation [{}]. This can happen due to a tragic exception when creating a new generation” classname is Translog.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                 // For this to happen we must have already copied the translog.ckp file into translog-gen.ckp so we first check if that file exists
                // if not we don't even try to clean it up and wait until we fail creating it
                assert Files.exists(nextTranslogFile) == false || Files.size(nextTranslogFile) 

 

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