LuciferYang opened a new pull request, #42766:
URL: https://github.com/apache/spark/pull/42766

   ### What changes were proposed in this pull request?
   This pr aims to set `shadeTestJar` of `core` module to `false` to skip shade 
`spark-core**-tests.jar` process.
   
   
   
   ### Why are the changes needed?
   Before SPARK-41244, the core module used the `maven-shade-plugin` 
configuration in the `parent pom.xml` for shading, where the `shadeTestJar` 
configuration item was set to the default `false` in the `maven-shade-plugin` 
in `parent pom.xml`.
   
   In SPARK-41244 | SPARK-41244 https://github.com/apache/spark/pull/38779, the 
core module started using a separate `maven-shade-plugin` configuration and set 
the `shadeTestJar` configuration item to `true`.
   
   And when `shadeTestJar` is true, `maven-shade-plugin` always try to 
find(sometime is downloading) some non-existent jars:
   
   ```
   [INFO] --- maven-shade-plugin:3.5.0:shade (default) @ spark-core_2.12 ---
   [INFO] Including org.eclipse.jetty:jetty-plus:jar:9.4.51.v20230217 in the 
shaded jar.
   Downloading from gcs-maven-central-mirror: 
https://maven-central.storage-download.googleapis.com/maven2/org/eclipse/jetty/jetty-plus/9.4.51.v20230217/jetty-plus-9.4.51.v20230217-tests.jar
   Downloading from central: 
https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-plus/9.4.51.v20230217/jetty-plus-9.4.51.v20230217-tests.jar
   [WARNING] Could not get tests for 
org.eclipse.jetty:jetty-plus:jar:9.4.51.v20230217:compile
   [INFO] Including org.eclipse.jetty:jetty-security:jar:9.4.51.v20230217 in 
the shaded jar.
   Downloading from gcs-maven-central-mirror: 
https://maven-central.storage-download.googleapis.com/maven2/org/eclipse/jetty/jetty-security/9.4.51.v20230217/jetty-security-9.4.51.v20230217-tests.jar
   Downloading from central: 
https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-security/9.4.51.v20230217/jetty-security-9.4.51.v20230217-tests.jar
   [WARNING] Could not get tests for 
org.eclipse.jetty:jetty-security:jar:9.4.51.v20230217:compile
   [INFO] Including org.eclipse.jetty:jetty-util:jar:9.4.51.v20230217 in the 
shaded jar.
   Downloading from gcs-maven-central-mirror: 
https://maven-central.storage-download.googleapis.com/maven2/org/eclipse/jetty/jetty-util/9.4.51.v20230217/jetty-util-9.4.51.v20230217-tests.jar
   Downloading from central: 
https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-util/9.4.51.v20230217/jetty-util-9.4.51.v20230217-tests.jar
   [WARNING] Could not get tests for 
org.eclipse.jetty:jetty-util:jar:9.4.51.v20230217:compile
   [INFO] Including org.eclipse.jetty:jetty-server:jar:9.4.51.v20230217 in the 
shaded jar.
   [INFO] Including org.eclipse.jetty:jetty-io:jar:9.4.51.v20230217 in the 
shaded jar.
   Downloading from gcs-maven-central-mirror: 
https://maven-central.storage-download.googleapis.com/maven2/org/eclipse/jetty/jetty-io/9.4.51.v20230217/jetty-io-9.4.51.v20230217-tests.jar
   Downloading from central: 
https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-io/9.4.51.v20230217/jetty-io-9.4.51.v20230217-tests.jar
   [WARNING] Could not get tests for 
org.eclipse.jetty:jetty-io:jar:9.4.51.v20230217:compile
   [INFO] Including org.eclipse.jetty:jetty-http:jar:9.4.51.v20230217 in the 
shaded jar.
   [INFO] Including org.eclipse.jetty:jetty-continuation:jar:9.4.51.v20230217 
in the shaded jar.
   Downloading from gcs-maven-central-mirror: 
https://maven-central.storage-download.googleapis.com/maven2/org/eclipse/jetty/jetty-continuation/9.4.51.v20230217/jetty-continuation-9.4.51.v20230217-tests.jar
   Downloading from central: 
https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-continuation/9.4.51.v20230217/jetty-continuation-9.4.51.v20230217-tests.jar
   [WARNING] Could not get tests for 
org.eclipse.jetty:jetty-continuation:jar:9.4.51.v20230217:compile
   [INFO] Including org.eclipse.jetty:jetty-servlet:jar:9.4.51.v20230217 in the 
shaded jar.
   [INFO] Including org.eclipse.jetty:jetty-proxy:jar:9.4.51.v20230217 in the 
shaded jar.
   Downloading from gcs-maven-central-mirror: 
https://maven-central.storage-download.googleapis.com/maven2/org/eclipse/jetty/jetty-proxy/9.4.51.v20230217/jetty-proxy-9.4.51.v20230217-tests.jar
   Downloading from central: 
https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-proxy/9.4.51.v20230217/jetty-proxy-9.4.51.v20230217-tests.jar
   [WARNING] Could not get tests for 
org.eclipse.jetty:jetty-proxy:jar:9.4.51.v20230217:compile
   [INFO] Including org.eclipse.jetty:jetty-client:jar:9.4.51.v20230217 in the 
shaded jar.
   Downloading from gcs-maven-central-mirror: 
https://maven-central.storage-download.googleapis.com/maven2/org/eclipse/jetty/jetty-client/9.4.51.v20230217/jetty-client-9.4.51.v20230217-tests.jar
   Downloading from central: 
https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-client/9.4.51.v20230217/jetty-client-9.4.51.v20230217-tests.jar
   [WARNING] Could not get tests for 
org.eclipse.jetty:jetty-client:jar:9.4.51.v20230217:compile
   [INFO] Including org.eclipse.jetty:jetty-servlets:jar:9.4.51.v20230217 in 
the shaded jar.
   Downloading from gcs-maven-central-mirror: 
https://maven-central.storage-download.googleapis.com/maven2/org/eclipse/jetty/jetty-servlets/9.4.51.v20230217/jetty-servlets-9.4.51.v20230217-tests.jar
   Downloading from central: 
https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-servlets/9.4.51.v20230217/jetty-servlets-9.4.51.v20230217-tests.jar
   [WARNING] Could not get tests for 
org.eclipse.jetty:jetty-servlets:jar:9.4.51.v20230217:compile
   [INFO] Including com.google.protobuf:protobuf-java:jar:3.23.4 in the shaded 
jar.
   Downloading from gcs-maven-central-mirror: 
https://maven-central.storage-download.googleapis.com/maven2/com/google/protobuf/protobuf-java/3.23.4/protobuf-java-3.23.4-tests.jar
   Downloading from central: 
https://repo.maven.apache.org/maven2/com/google/protobuf/protobuf-java/3.23.4/protobuf-java-3.23.4-tests.jar
   [WARNING] Could not get tests for 
com.google.protobuf:protobuf-java:jar:3.23.4:compile
   [INFO] Including org.spark-project.spark:unused:jar:1.0.0 in the shaded jar.
   Downloading from gcs-maven-central-mirror: 
https://maven-central.storage-download.googleapis.com/maven2/org/spark-project/spark/unused/1.0.0/unused-1.0.0-tests.jar
   Downloading from central: 
https://repo.maven.apache.org/maven2/org/spark-project/spark/unused/1.0.0/unused-1.0.0-tests.jar
   [WARNING] Could not get tests for 
org.spark-project.spark:unused:jar:1.0.0:compile
   ```
   
   Under poor network conditions, the time for Maven compilation will increase.
   
   On the other hand, setting shadeTestJar back to false has not resulted in 
any Maven test failures, so this pr reset `shadeTestJar` to `false`.
   
   ### Does this PR introduce _any_ user-facing change?
   No
   
   ### How was this patch tested?
   - Pass GitHub Action
   
   
   ### Was this patch authored or co-authored using generative AI tooling?
   No
   


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