[SPARK-44112][BUILD][INFRA][DOCS] Drop support for Java 8 and Java 11

.github/workflows/benchmark.yml

@@ -27,9 +27,9 @@ on:
         required: true
         default: '*'
       jdk:
-        description: 'JDK version: 8, 11, 17 or 21-ea'
+        description: 'JDK version: 17 or 21-ea'
         required: true
-        default: '8'
+        default: '17'
       scala:
         description: 'Scala version: 2.12 or 2.13'
         required: true

.github/workflows/build_and_test.yml

@@ -25,7 +25,7 @@ on:
       java:
         required: false
         type: string
-        default: 8
+        default: 17
       branch:
         description: Branch to run the build against
         required: false
@@ -207,6 +207,7 @@ jobs:
       GITHUB_PREV_SHA: ${{ github.event.before }}
       SPARK_LOCAL_IP: localhost
       SKIP_PACKAGING: true
+      SCALA_PROFILE: scala2.13
     steps:
     - name: Checkout Spark repository
       uses: actions/checkout@v3
@@ -385,6 +386,7 @@ jobs:
       SKIP_PACKAGING: true
       METASPACE_SIZE: 1g
       BRANCH: ${{ inputs.branch }}
+      SCALA_PROFILE: scala2.13
     steps:
     - name: Checkout Spark repository
       uses: actions/checkout@v3
@@ -494,6 +496,7 @@ jobs:
       SPARK_LOCAL_IP: localhost
       SKIP_MIMA: true
       SKIP_PACKAGING: true
+      SCALA_PROFILE: scala2.13
     steps:
     - name: Checkout Spark repository
       uses: actions/checkout@v3
@@ -650,11 +653,11 @@ jobs:
         if [ -f ./dev/free_disk_space_container ]; then
           ./dev/free_disk_space_container
         fi
-    - name: Install Java 8
+    - name: Install Java 17
       uses: actions/setup-java@v3
       with:
         distribution: temurin
-        java-version: 8
+        java-version: 17
     - name: License test
       run: ./dev/check-license
     - name: Dependencies test
@@ -778,7 +781,6 @@ jobs:
       fail-fast: false
       matrix:
         java:
-          - 11
           - 17
           - 21-ea
     runs-on: ubuntu-22.04
@@ -865,11 +867,11 @@ jobs:
         key: scala-213-coursier-${{ hashFiles('**/pom.xml', '**/plugins.sbt') }}
         restore-keys: |
           scala-213-coursier-
-    - name: Install Java 8
+    - name: Install Java 17
       uses: actions/setup-java@v3
       with:
         distribution: temurin
-        java-version: 8
+        java-version: 17
     - name: Build with SBT
       run: |
         ./dev/change-scala-version.sh 2.13
@@ -885,6 +887,7 @@ jobs:
     timeout-minutes: 300
     env:
       SPARK_LOCAL_IP: localhost
+      SCALA_PROFILE: scala2.13
     steps:
     - name: Checkout Spark repository
       uses: actions/checkout@v3
@@ -916,11 +919,11 @@ jobs:
         key: tpcds-coursier-${{ hashFiles('**/pom.xml', '**/plugins.sbt') }}
         restore-keys: |
           tpcds-coursier-
-    - name: Install Java 8
+    - name: Install Java 17
       uses: actions/setup-java@v3
       with:
         distribution: temurin
-        java-version: 8
+        java-version: 17
     - name: Cache TPC-DS generated data
       id: cache-tpcds-sf-1
       uses: actions/cache@v3
@@ -990,6 +993,7 @@ jobs:
       ORACLE_DOCKER_IMAGE_NAME: gvenzl/oracle-xe:21.3.0
       SKIP_MIMA: true
       SKIP_PACKAGING: true
+      SCALA_PROFILE: scala2.13
     steps:
     - name: Checkout Spark repository
       uses: actions/checkout@v3
@@ -1022,11 +1026,11 @@ jobs:
         key: docker-integration-coursier-${{ hashFiles('**/pom.xml', '**/plugins.sbt') }}
         restore-keys: |
           docker-integration-coursier-
-    - name: Install Java 8
+    - name: Install Java 17
       uses: actions/setup-java@v3
       with:
         distribution: temurin
-        java-version: 8
+        java-version: 17
     - name: Run tests
       run: |
         ./dev/run-tests --parallelism 1 --modules docker-integration-tests --included-tags org.apache.spark.tags.DockerTest
@@ -1110,7 +1114,8 @@ jobs:
           kubectl create clusterrolebinding serviceaccounts-cluster-admin --clusterrole=cluster-admin --group=system:serviceaccounts || true
           kubectl apply -f https://raw.githubusercontent.com/volcano-sh/volcano/v1.7.0/installer/volcano-development.yaml || true
           eval $(minikube docker-env)
-          build/sbt -Psparkr -Pkubernetes -Pvolcano -Pkubernetes-integration-tests -Dspark.kubernetes.test.driverRequestCores=0.5 -Dspark.kubernetes.test.executorRequestCores=0.2 -Dspark.kubernetes.test.volcanoMaxConcurrencyJobNum=1 -Dtest.exclude.tags=local "kubernetes-integration-tests/test"
+          dev/change-scala-version.sh 2.13
+          build/sbt -Pscala-2.13 -Psparkr -Pkubernetes -Pvolcano -Pkubernetes-integration-tests -Dspark.kubernetes.test.driverRequestCores=0.5 -Dspark.kubernetes.test.executorRequestCores=0.2 -Dspark.kubernetes.test.volcanoMaxConcurrencyJobNum=1 -Dtest.exclude.tags=local "kubernetes-integration-tests/test"
       - name: Upload Spark on K8S integration tests log files
         if: ${{ !success() }}
         uses: actions/upload-artifact@v3

.github/workflows/build_ansi.yml

@@ -17,7 +17,7 @@
 # under the License.
 #
 
-name: "Build / ANSI (master, Hadoop 3, JDK 8, Scala 2.12)"
+name: "Build / ANSI (master, Hadoop 3, JDK 17, Scala 2.12)"
 
 on:
   schedule:
@@ -31,7 +31,7 @@ jobs:
     uses: ./.github/workflows/build_and_test.yml
     if: github.repository == 'apache/spark'
     with:
-      java: 8
+      java: 17
       branch: master
       hadoop: hadoop3
       envs: >-

.github/workflows/build_coverage.yml

@@ -17,7 +17,7 @@
 # under the License.
 #
 
-name: "Build / Coverage (master, Scala 2.12, Hadoop 3, JDK 8)"
+name: "Build / Coverage (master, Scala 2.12, Hadoop 3, JDK 17)"
 
 on:
   schedule:
@@ -31,7 +31,7 @@ jobs:
     uses: ./.github/workflows/build_and_test.yml
     if: github.repository == 'apache/spark'
     with:
-      java: 8
+      java: 17
       branch: master
       hadoop: hadoop3
       envs: >-

.github/workflows/build_rockdb_as_ui_backend.yml

@@ -17,7 +17,7 @@
 # under the License.
 #
 
-name: "Build / RocksDB as UI Backend (master, Hadoop 3, JDK 8, Scala 2.12)"
+name: "Build / RocksDB as UI Backend (master, Hadoop 3, JDK 17, Scala 2.12)"
 
 on:
   schedule:
@@ -31,7 +31,7 @@ jobs:
     uses: ./.github/workflows/build_and_test.yml
     if: github.repository == 'apache/spark'
     with:
-      java: 8
+      java: 17
       branch: master
       hadoop: hadoop3
       envs: >-

.github/workflows/build_scala213.yml

@@ -17,7 +17,7 @@
 # under the License.
 #
 
-name: "Build (master, Scala 2.13, Hadoop 3, JDK 8)"
+name: "Build (master, Scala 2.13, Hadoop 3, JDK 17)"
 
 on:
   schedule:
@@ -31,7 +31,7 @@ jobs:
     uses: ./.github/workflows/build_and_test.yml
     if: github.repository == 'apache/spark'
     with:
-      java: 8
+      java: 17
       branch: master
       hadoop: hadoop3
       envs: >-

.github/workflows/publish_snapshot.yml

@@ -32,9 +32,6 @@ jobs:
       matrix:
         branch:
           - master
-          - branch-3.5
-          - branch-3.4
-          - branch-3.3
     steps:
     - name: Checkout Spark repository
       uses: actions/checkout@v3
@@ -47,11 +44,11 @@ jobs:
         key: snapshot-maven-${{ hashFiles('**/pom.xml') }}
         restore-keys: |
           snapshot-maven-
-    - name: Install Java 8
+    - name: Install Java 17
       uses: actions/setup-java@v3
       with:
         distribution: temurin
-        java-version: 8
+        java-version: 17
     - name: Publish snapshot
       env:
         ASF_USERNAME: ${{ secrets.NEXUS_USER }}

.github/workflows/publish_snapshot_java8.yml

@@ -0,0 +1,61 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+name: Publish Snapshot using Java 8
+
+on:
+  schedule:
+  - cron: '0 0 * * *'
+
+jobs:
+  publish-snapshot:
+    if: github.repository == 'apache/spark'
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        branch:
+          - branch-3.5
+          - branch-3.4
+          - branch-3.3
+    steps:
+    - name: Checkout Spark repository
+      uses: actions/checkout@v3
+      with:
+        ref: ${{ matrix.branch }}
+    - name: Cache Maven local repository
+      uses: actions/cache@v3
+      with:
+        path: ~/.m2/repository
+        key: snapshot-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          snapshot-maven-
+    - name: Install Java 8
+      uses: actions/setup-java@v3
+      with:
+        distribution: temurin
+        java-version: 8
+    - name: Publish snapshot
+      env:
+        ASF_USERNAME: ${{ secrets.NEXUS_USER }}
+        ASF_PASSWORD: ${{ secrets.NEXUS_PW }}
+        GPG_KEY: "not_used"
+        GPG_PASSPHRASE: "not_used"
+        GIT_REF: ${{ matrix.branch }}
+      run: ./dev/create-release/release-build.sh publish-snapshot

docs/building-spark.md

@@ -27,7 +27,7 @@ license: |
 ## Apache Maven
 
 The Maven-based build is the build of reference for Apache Spark.
-Building Spark using Maven requires Maven 3.9.4 and Java 8/11/17.
+Building Spark using Maven requires Maven 3.9.4 and Java 17.
 Spark requires Scala 2.12/2.13; support for Scala 2.11 was removed in Spark 3.0.0.
 
 ### Setting up Maven's Memory Usage

docs/index.md

@@ -34,12 +34,11 @@ source, visit [Building Spark](building-spark.html).
 
 Spark runs on both Windows and UNIX-like systems (e.g. Linux, Mac OS), and it should run on any platform that runs a supported version of Java. This should include JVMs on x86_64 and ARM64. It's easy to run locally on one machine --- all you need is to have `java` installed on your system `PATH`, or the `JAVA_HOME` environment variable pointing to a Java installation.
 
-Spark runs on Java 8/11/17, Scala 2.12/2.13, Python 3.8+, and R 3.5+.
-Java 8 prior to version 8u371 support is deprecated as of Spark 3.5.0.
+Spark runs on Java 17, Scala 2.12/2.13, Python 3.8+, and R 3.5+.
 When using the Scala API, it is necessary for applications to use the same version of Scala that Spark was compiled for.
 For example, when using Scala 2.13, use Spark compiled for 2.13, and compile code/applications for Scala 2.13 as well.
 
-For Java 11, setting `-Dio.netty.tryReflectionSetAccessible=true` is required for the Apache Arrow library. This prevents the `java.lang.UnsupportedOperationException: sun.misc.Unsafe or java.nio.DirectByteBuffer.(long, int) not available` error when Apache Arrow uses Netty internally.
+For Java 17, setting `-Dio.netty.tryReflectionSetAccessible=true` is required for the Apache Arrow library. This prevents the `java.lang.UnsupportedOperationException: sun.misc.Unsafe or java.nio.DirectByteBuffer.(long, int) not available` error when Apache Arrow uses Netty internally.
 
 # Running the Examples and Shell
 

pom.xml

@@ -112,7 +112,7 @@
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    <java.version>1.8</java.version>
+    <java.version>17</java.version>
     <maven.compiler.source>${java.version}</maven.compiler.source>
     <maven.compiler.target>${java.version}</maven.compiler.target>
     <maven.version>3.9.4</maven.version>
@@ -2933,7 +2933,7 @@
               <arg>-deprecation</arg>
               <arg>-feature</arg>
               <arg>-explaintypes</arg>
-              <arg>-target:jvm-1.8</arg>
+              <arg>-target:17</arg>
               <arg>-Xfatal-warnings</arg>
               <arg>-Ywarn-unused:imports</arg>
               <arg>-P:silencer:globalFilters=.*deprecated.*</arg>
@@ -3645,7 +3645,7 @@
                   <arg>-deprecation</arg>
                   <arg>-feature</arg>
                   <arg>-explaintypes</arg>
-                  <arg>-target:jvm-1.8</arg>
+                  <arg>-target:17</arg>
                   <arg>-Wconf:cat=deprecation:wv,any:e</arg>
                   <arg>-Wunused:imports</arg>
                   <!--