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https://issues.apache.org/jira/browse/AVRO-4125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17937372#comment-17937372
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Martin Tzvetanov Grigorov commented on AVRO-4125:
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Looks like a duplicate of AVRO-4110
> Cast issue when adding Double to DoubleArray in 1.12.0
> ------------------------------------------------------
>
> Key: AVRO-4125
> URL: https://issues.apache.org/jira/browse/AVRO-4125
> Project: Apache Avro
> Issue Type: Bug
> Components: java
> Reporter: Adrien Sanchez
> Priority: Major
> Attachments: image-2025-03-21-11-43-13-178.png
>
>
> Hi,
> I recently upgraded to Avro 1.12.0, and I have an issue with Double objects
> when adding them to an array.
> I have an Avro schema in which I have a field that represents geospatial
> coordinates :
> {code:java}
> {
> "name": "coordinates",
> "type": [
> "null",
> {
> "type": "array",
> "items": {
> "type": "array",
> "items": {
> "type": "array",
> "items": "double"
> }
> }
> }
> ],
> "default": null
> }{code}
> This was well handled in Avro 1.11.4. However, when migrating to Avro 1.12.0,
> the double items in my array came with some unexpected extra digits.
> Digging into the problem, it looks like the array is handled in 1.12.0 as a
> *DoubleArray* from the *PrimitivesArrays* class.
>
> In this class, the add method is implemented this way :
> {code:java}
> public void add(int location, Double o) {
> if (o != null) {
> this.add(location, (double)o.floatValue());
> }
> }
> {code}
> The cast to double primitive type from the float value comes with modifying
> the precision.
>
> Here is an example of how the precision is modified in
> PrimitivesArrays.DoubleArray :
> !image-2025-03-21-11-43-13-178.png|width=446,height=360!
> Here, I expect to add "2.64" to my array, but "2.640000104904175" is actually
> added in the end.
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