Cannot parse model definition as the content is larger than the maximum stream size – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.11-7.15

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Briefly, this error occurs when the model definition size exceeds the maximum stream size that Elasticsearch can handle. This could be due to a large number of fields or complex nested fields in the model. To resolve this issue, you can either increase the maximum stream size limit in Elasticsearch settings or reduce the size of your model definition by removing unnecessary fields or simplifying complex nested fields. Also, consider breaking down large models into smaller, manageable ones.

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This guide will help you check for common problems that cause the log ” Cannot parse model definition as the content is larger than the maximum stream size ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Cannot parse model definition as the content is larger than the maximum stream size” class name is InferenceToXContentCompressor.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 (SimpleBoundedInputStream.StreamSizeExceededException)
 ExceptionsHelper.unwrap(parseException; SimpleBoundedInputStream.StreamSizeExceededException.class);  if (streamSizeCause != null) {
 // The root cause is that the model is too big.
 throw new CircuitBreakingException("Cannot parse model definition as the content is larger than the maximum stream size " +
 "of [" + streamSizeCause.getMaxBytes() + "] bytes. Max stream size is 10% of the JVM heap or 1GB whichever is smallest";
 CircuitBreaker.Durability.PERMANENT);
 } else {
 throw parseException;
 }

 

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