[
https://issues.apache.org/jira/browse/AVRO-4125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Adrien Sanchez updated AVRO-4125:
---------------------------------
Description:
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.
was:
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" in my array, but "2.640000104904175" is actually
added in the end.
> 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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