Can t round a BYTES – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.9-8.9

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Briefly, this error occurs when Elasticsearch tries to round off a value in bytes, which is not possible. This could be due to incorrect configuration or a bug in the code. To resolve this issue, you can check your Elasticsearch configuration for any incorrect settings related to memory allocation or data size. If the configuration seems fine, you may need to update your Elasticsearch version or check your code for any bugs that might be causing this error.

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This guide will help you check for common problems that cause the log ” can’t round a [BYTES] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search, aggregations.

Log Context

Log “can’t round a [BYTES]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 return org.elasticsearch.index.fielddata.FieldData.docsWithValue(bytes);
 }  @Override
 public final Function roundingPreparer(AggregationContext context) throws IOException {
 throw new AggregationExecutionException("can't round a [BYTES]");
 }  /**
 * Specialization of {@linkplain Bytes} who's underlying storage
 * de-duplicates its bytes by storing them in a per-leaf sorted


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