Skip to content

Commit 7b7a7e6

Browse files
LuciferYangdongjoon-hyun
authored andcommitted
[SPARK-45144][BUILD] Downgrade scala-maven-plugin to 4.7.1
This pr downgrade `scala-maven-plugin` to version 4.7.1 to avoid it automatically adding the `-release` option as a Scala compilation argument. The `scala-maven-plugin` versions 4.7.2 and later will try to automatically append the `-release` option as a Scala compilation argument when it is not specified by the user: 1. 4.7.2 and 4.8.0: try to add the `-release` option for Scala versions 2.13.9 and higher. 2. 4.8.1: try to append the `-release` option for Scala versions 2.12.x/2.13.x/3.1.1, and append `-java-output-version` for Scala 3.1.2. The addition of the `-release` option has caused issues mentioned in SPARK-44376 | apache#41943 and apache#40442 (comment). This is because the `-release` option has stronger compilation restrictions than `-target`, ensuring not only bytecode format, but also that the API used in the code is compatible with the specified version of Java. However, many APIs in the `sun.*` package are not `exports` in Java 11, 17, and 21, such as `sun.nio.ch.DirectBuffer`, `sun.util.calendar.ZoneInfo`, and `sun.nio.cs.StreamDecoder`, making them invisible when compiling across different versions. For discussions within the Scala community, see scala/bug#12643, scala/bug#12824, scala/bug#12866, but this is not a bug. I have also submitted an issue to the `scala-maven-plugin` community to discuss the possibility of adding additional settings to control the addition of the `-release` option: davidB/scala-maven-plugin#722. For Apache Spark 4.0, in the short term, I suggest downgrading `scala-maven-plugin` to version 4.7.1 to avoid it automatic adding the `-release` option as a Scala compilation argument. In the long term, we should reduce use of APIs that are not `exports` for compatibility with the `-release` compilation option due to `-target` already deprecated after Scala 2.13.9. No - Pass GitHub Actions - Manual check run `git revert 656bf36` to revert to using Scala 2.13.11 and run `dev/change-scala-version.sh 2.13` to change Scala to 2.13 1. Run `build/mvn clean install -DskipTests -Pscala-2.13 -X` to check the Scala compilation arguments. Before ``` [[DEBUG] [zinc] Running cached compiler 1992eaf4 for Scala compiler version 2.13.11 [DEBUG] [zinc] The Scala compiler is invoked with: -unchecked -deprecation -feature -explaintypes -target:jvm-1.8 -Wconf:cat=deprecation:wv,any:e -Wunused:imports -Wconf:cat=scaladoc:wv -Wconf:cat=lint-multiarg-infix:wv -Wconf:cat=other-nullary-override:wv -Wconf:cat=other-match-analysis&site=org.apache.spark.sql.catalyst.catalog.SessionCatalog.lookupFunction.catalogFunction:wv -Wconf:cat=other-pure-statement&site=org.apache.spark.streaming.util.FileBasedWriteAheadLog.readAll.readFile:wv -Wconf:cat=other-pure-statement&site=org.apache.spark.scheduler.OutputCommitCoordinatorSuite.<local OutputCommitCoordinatorSuite>.futureAction:wv -Wconf:msg=^(?=.*?method|value|type|object|trait|inheritance)(?=.*?deprecated)(?=.*?since 2.13).+$:s -Wconf:msg=^(?=.*?Widening conversion from)(?=.*?is deprecated because it loses precision).+$:s -Wconf:msg=Auto-application to \`\(\)\` is deprecated:s -Wconf:msg=method with a single empty parameter list overrides method without any parameter list:s -Wconf:msg=method without a parameter list overrides a method with a single empty one:s -Wconf:cat=deprecation&msg=procedure syntax is deprecated:e -Wconf:cat=unchecked&msg=outer reference:s -Wconf:cat=unchecked&msg=eliminated by erasure:s -Wconf:msg=^(?=.*?a value of type)(?=.*?cannot also be).+$:s -Wconf:cat=unused-imports&src=org\/apache\/spark\/graphx\/impl\/VertexPartitionBase.scala:s -Wconf:cat=unused-imports&src=org\/apache\/spark\/graphx\/impl\/VertexPartitionBaseOps.scala:s -Wconf:msg=Implicit definition should have explicit type:s -release 8 -bootclasspath ... ``` After ``` [DEBUG] [zinc] Running cached compiler 72dd4888 for Scala compiler version 2.13.11 [DEBUG] [zinc] The Scala compiler is invoked with: -unchecked -deprecation -feature -explaintypes -target:jvm-1.8 -Wconf:cat=deprecation:wv,any:e -Wunused:imports -Wconf:cat=scaladoc:wv -Wconf:cat=lint-multiarg-infix:wv -Wconf:cat=other-nullary-override:wv -Wconf:cat=other-match-analysis&site=org.apache.spark.sql.catalyst.catalog.SessionCatalog.lookupFunction.catalogFunction:wv -Wconf:cat=other-pure-statement&site=org.apache.spark.streaming.util.FileBasedWriteAheadLog.readAll.readFile:wv -Wconf:cat=other-pure-statement&site=org.apache.spark.scheduler.OutputCommitCoordinatorSuite.<local OutputCommitCoordinatorSuite>.futureAction:wv -Wconf:msg=^(?=.*?method|value|type|object|trait|inheritance)(?=.*?deprecated)(?=.*?since 2.13).+$:s -Wconf:msg=^(?=.*?Widening conversion from)(?=.*?is deprecated because it loses precision).+$:s -Wconf:msg=Auto-application to \`\(\)\` is deprecated:s -Wconf:msg=method with a single empty parameter list overrides method without any parameter list:s -Wconf:msg=method without a parameter list overrides a method with a single empty one:s -Wconf:cat=deprecation&msg=procedure syntax is deprecated:e -Wconf:cat=unchecked&msg=outer reference:s -Wconf:cat=unchecked&msg=eliminated by erasure:s -Wconf:msg=^(?=.*?a value of type)(?=.*?cannot also be).+$:s -Wconf:cat=unused-imports&src=org\/apache\/spark\/graphx\/impl\/VertexPartitionBase.scala:s -Wconf:cat=unused-imports&src=org\/apache\/spark\/graphx\/impl\/VertexPartitionBaseOps.scala:s -Wconf:msg=Implicit definition should have explicit type:s -target:8 -bootclasspath ... ``` After downgrading the version, the `-release` option should no longer appear in the compilation arguments. 2. Maven can build the project with Java 17 without the issue described in apache#41943. And after this pr, we can re-upgrade Scala 2.13 to Scala 2.13.11. No Closes apache#42899 from LuciferYang/SPARK-45144. Authored-by: yangjie01 <[email protected]> Signed-off-by: Dongjoon Hyun <[email protected]>
1 parent 9b7bf01 commit 7b7a7e6

File tree

1 file changed

+2
-1
lines changed

1 file changed

+2
-1
lines changed

pom.xml

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -176,7 +176,8 @@
176176
errors building different Hadoop versions.
177177
See: SPARK-36547, SPARK-38394.
178178
-->
179-
<scala-maven-plugin.version>4.8.0</scala-maven-plugin.version>
179+
<!-- don't upgrade scala-maven-plugin to version 4.7.2 or higher, see SPARK-45144 for details -->
180+
<scala-maven-plugin.version>4.7.1</scala-maven-plugin.version>
180181
<versions-maven-plugin.version>2.14.1</versions-maven-plugin.version>
181182
<!-- for now, not running scalafmt as part of default verify pipeline -->
182183
<scalafmt.skip>true</scalafmt.skip>

0 commit comments

Comments
 (0)