The number of dimensions for field – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.3-7.15

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Briefly, this error occurs when the number of dimensions specified for a field in Elasticsearch exceeds the allowed limit. This could be due to incorrect configuration or data input. To resolve this, you can reduce the number of dimensions for the field to meet the limit. Alternatively, you can reconfigure your data structure to distribute the dimensions across multiple fields or indices. Also, ensure that your data input aligns with the configured dimensions to avoid this error.

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This guide will help you check for common problems that cause the log ” The number of dimensions for field [ ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “The number of dimensions for field [” class name is DenseVectorFieldMapper.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 .setValidator(dims -> {
 if (dims == null) {
 throw new MapperParsingException("Missing required parameter [dims] for field [" + name + "]");
 }
 if ((dims > MAX_DIMS_COUNT) || (dims < 1)) {
 throw new MapperParsingException("The number of dimensions for field [" + name +
 "] should be in the range [1; " + MAX_DIMS_COUNT + "] but was [" + dims + "]");
 }
 });
 Parameter> meta = Parameter.metaParam();

 

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