Removing index from previous incomplete migration – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.16-8.9

Briefly, this error occurs when Elasticsearch detects an incomplete migration process from a previous version. This could be due to an abrupt shutdown or a system crash during the migration process. To resolve this issue, you can try to re-run the migration process ensuring that the system doesn’t shut down during the process. Alternatively, you can restore the index from a backup if available. If these methods fail, you may need to recreate the index and reindex the data.

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

Log Context

Log “removing index [{}] from previous incomplete migration” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            } catch (Exception e) {
            final String newIndexName = migrationInfo.getNextIndexName();
  "removing index [{}] from previous incomplete migration"; newIndexName);



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