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https://issues.apache.org/jira/browse/SPARK-45311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17788270#comment-17788270
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Marc Le Bihan edited comment on SPARK-45311 at 11/21/23 6:31 AM:
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Thanks, that's a good news. I'll check if this 3.4.2 succeed in resolving the
two first issues mentioned (I think it will) from the SNAPSHOT in preparation,
and will close them as duplicate.
For the last one,
*3)* When I switch to the *Spark 3.5.0* version, the same problems remain, but
another add itself to the list:
"{*}Only expression encoders are supported for now{*}" on what was accepted and
working before.
it's a new one, I should keep it, open, isn't it?
was (Author: mlebihan):
Thanks, that's a good news. I'll check if this 3.4.2 in preparation succeed in
resolving the two first issues mentioned (I think they will) and will close
them as duplicate.
For the last one,
*3)* When I switch to the *Spark 3.5.0* version, the same problems remain, but
another add itself to the list:
"{*}Only expression encoders are supported for now{*}" on what was accepted and
working before.
it's a new one, I should keep apart, open, isn't it?
> Encoder fails on many "NoSuchElementException: None.get" since 3.4.x, search
> for an encoder for a generic type, and since 3.5.x isn't "an expression
> encoder"
> -------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-45311
> URL: https://issues.apache.org/jira/browse/SPARK-45311
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.4.0, 3.4.1, 3.5.0
> Environment: Debian 12
> Java 17
> Underlying Spring-Boot 2.7.14
> Reporter: Marc Le Bihan
> Priority: Major
>
> If you find it convenient, you might clone the
> [https://gitlab.com/territoirevif/minimal-tests-spark-issue] project (that
> does many operations around cities, local authorities and accounting with
> open data) where I've extracted from my work what's necessary to make a set
> of 35 tests that run correctly with Spark 3.3.x, and show the troubles
> encountered with 3.4.x and 3.5.x.
>
> It is working well with Spark 3.2.x, 3.3.x. But as soon as I selec{*}t Spark
> 3.4.x{*}, where the encoder seems to have deeply changed, the encoder fails
> with two problems:
>
> *1)* It throws *java.util.NoSuchElementException: None.get* messages
> everywhere.
> Asking over the Internet, I wasn't alone facing this problem. Reading it,
> you'll see that I've attempted a debug but my Scala skills are low.
> [https://stackoverflow.com/questions/76036349/encoders-bean-doesnt-work-anymore-on-a-java-pojo-with-spark-3-4-0]
> {color:#172b4d}by the way, if possible, the encoder and decoder functions
> should forward a parameter as soon as the name of the field being handled is
> known, and then all the long of their process, so that when the encoder is at
> any point where it has to throw an exception, it knows the field it is
> handling in its specific call and can send a message like:{color}
> {color:#00875a}_java.util.NoSuchElementException: None.get when encoding [the
> method or field it was targeting]_{color}
>
> *2)* *Not found an encoder of the type RS to Spark SQL internal
> representation.* Consider to change the input type to one of supported at
> (...)
> Or : Not found an encoder of the type *OMI_ID* to Spark SQL internal
> representation (...)
>
> where *RS* and *OMI_ID* are generic types.
> This is strange.
> [https://stackoverflow.com/questions/76045255/encoders-bean-attempts-to-check-the-validity-of-a-return-type-considering-its-ge]
>
> *3)* When I switch to the *Spark 3.5.0* version, the same problems remain,
> but another add itself to the list:
> "{*}Only expression encoders are supported for now{*}" on what was accepted
> and working before.
>
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