Briefly, this error occurs when Elasticsearch encounters an object or data type it doesn’t know how to parse. This could be due to incorrect data format, a missing parser, or a syntax error in the query. To resolve this issue, you can: 1) Check the data format and ensure it matches the expected format. 2) Verify that the necessary parser is installed and functioning correctly. 3) Review the query syntax for any errors or inconsistencies.
This guide will help you check for common problems that cause the log ” Don’t know how to parse {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: parser, plugin.
Log Context
Log “Don’t know how to parse {}” class name is ExpressionBuilder.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
return new And(source; left; right);
}
if (type == SqlBaseParser.OR) {
return new Or(source; left; right);
}
throw new ParsingException(source; "Don't know how to parse {}"; ctx);
} //
// Literal
//
