Invalid alias filter – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when the filter defined for an Elasticsearch alias is incorrect or invalid. This could be due to a syntax error, incorrect field name, or a non-existent field in the filter query. To resolve this issue, you should first verify the syntax of your filter query. Make sure that all field names used in the filter exist in your index. If the error persists, try to simplify your filter query to identify the problematic part. Lastly, ensure that the Elasticsearch version you’re using supports the features used in your filter query.

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This guide will help you check for common problems that cause the log ” Invalid alias filter ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: alias, search, filter.

Log Context

Log “Invalid alias filter” class name is ShardSearchRequest.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 return null;
 }
 try {
 return filterParser.apply(alias.filter().uncompressed());
 } catch (IOException ex) {
 throw new AliasFilterParsingException(index; alias.getAlias(); "Invalid alias filter"; ex);
 }
 };
 if (aliasNames.length == 1) {
 AliasMetadata alias = aliases.get(aliasNames[0]);
 if (alias == null) {

 

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