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 related issues

Opster Team

Feb-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

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.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

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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