Stripping aliases from index before importing – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.4-7.15

Briefly, this error occurs when Elasticsearch is trying to import data from an index that has aliases associated with it. Aliases are essentially alternative names for indices. However, during the import process, these aliases can cause conflicts or confusion, hence they are stripped off. To resolve this issue, you can either manually remove the aliases before importing the index, or use the ‘ignore_aliases’ option during the import process to automatically strip them. Alternatively, you can also rename the aliases to avoid any potential conflicts.

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

Log Context

Log “[{}] stripping aliases: {} from index before importing” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    private IndexMetadata stripAliases(IndexMetadata indexMetadata) {
        if (indexMetadata.getAliases().isEmpty()) {
            return indexMetadata;
        } else {
  "[{}] stripping aliases: {} from index before importing";
                indexMetadata.getIndex(); indexMetadata.getAliases().keys());
            return IndexMetadata.builder(indexMetadata).removeAllAliases().build();