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https://issues.apache.org/jira/browse/SPARK-33772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17415235#comment-17415235
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Dongjoon Hyun commented on SPARK-33772:
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If you look at SPARK-24417 (Java 11), you can estimate what is coming to us.
For example, **47 patches** are invasive enough. Moreover, given that the
breaking nature of Java 11, SPARK-33772 (Java 17) may need more patches than
SPARK-24417 (Java 11).
> they are not too invasive.
SPARK-33772 will be open until the Apache Spark community finishes all
validations, [~h-vetinari]. Even after the community finish the validations, we
may need to fix more at Apache Spark 3.3.1 and 3.3.2. That's our expectation.
We don't want a partial backport and end up in a middle of nowhere.
> Build and Run Spark on Java 17
> ------------------------------
>
> Key: SPARK-33772
> URL: https://issues.apache.org/jira/browse/SPARK-33772
> Project: Spark
> Issue Type: New Feature
> Components: Build
> Affects Versions: 3.3.0
> Reporter: Dongjoon Hyun
> Priority: Major
>
> Apache Spark supports Java 8 and Java 11 (LTS). The next Java LTS version is
> 17.
> ||Version||Release Date||
> |Java 17 (LTS)|September 2021|
> Apache Spark has a release plan and `Spark 3.2 Code freeze` was July along
> with the release branch cut.
> - https://spark.apache.org/versioning-policy.html
> Supporting new Java version is considered as a new feature which we cannot
> allow to backport.
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