From ad263e4ffbe9461c1921b0f8162f0cee3ad0762e Mon Sep 17 00:00:00 2001
From: Fokko Driesprong <fokko@apache.org>
Date: Tue, 16 Sep 2025 14:08:47 +0200
Subject: [PATCH 1/3] Bump to Java 11

---
 .github/workflows/ci-hadoop3.yml              |  2 +-
 .github/workflows/vector-plugins.yml          |  2 +-
 parquet-format-structures/pom.xml             |  4 +--
 .../parquet-encoding-vector/pom.xml           | 26 ++++---------------
 pom.xml                                       | 19 +++-----------
 5 files changed, 13 insertions(+), 40 deletions(-)

diff --git a/.github/workflows/ci-hadoop3.yml b/.github/workflows/ci-hadoop3.yml
index 46662ad831..61ed3ba90c 100644
--- a/.github/workflows/ci-hadoop3.yml
+++ b/.github/workflows/ci-hadoop3.yml
@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ { setup: '8', maven: '1.8' }, { setup: '11', maven: '11' }, { setup: '17', maven: '17' } ]
+        java: [ { setup: '11', maven: '11' }, { setup: '17', maven: '17' }, { setup: '21', maven: '21' } ]
         codes: [ 'uncompressed,brotli', 'gzip,snappy' ]
     name: Build Parquet with JDK ${{ matrix.java.setup }} and ${{ matrix.codes }}
 
diff --git a/.github/workflows/vector-plugins.yml b/.github/workflows/vector-plugins.yml
index f02ac052e0..496753d475 100644
--- a/.github/workflows/vector-plugins.yml
+++ b/.github/workflows/vector-plugins.yml
@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ '17' ]
+        java: [ '17', '21' ]
         codes: [ 'uncompressed' ]
     name: Build Parquet with JDK ${{ matrix.java }} and ${{ matrix.codes }}
 
diff --git a/parquet-format-structures/pom.xml b/parquet-format-structures/pom.xml
index af4fe3a3a4..5818f1dfdf 100644
--- a/parquet-format-structures/pom.xml
+++ b/parquet-format-structures/pom.xml
@@ -129,7 +129,7 @@
         <configuration>
           <!-- We have to turn off the javadoc check because thrift generates improper comments -->
           <doclint>none</doclint>
-          <source>8</source>
+          <source>11</source>
           <quiet>true</quiet>
         </configuration>
       </plugin>
@@ -144,7 +144,7 @@
         <configuration>
           <!-- We have to turn off the javadoc check because thrift generates improper comments -->
           <doclint>none</doclint>
-          <source>8</source>
+          <source>11</source>
         </configuration>
       </plugin>
     </plugins>
diff --git a/parquet-plugins/parquet-encoding-vector/pom.xml b/parquet-plugins/parquet-encoding-vector/pom.xml
index da62797f68..6157070c2d 100644
--- a/parquet-plugins/parquet-encoding-vector/pom.xml
+++ b/parquet-plugins/parquet-encoding-vector/pom.xml
@@ -35,7 +35,7 @@
   <url>https://parquet.apache.org</url>
 
   <properties>
-    <!-- Those properties prevent java 8 to try and compile this code -->
+    <!-- Those properties prevent Java 11 to try and compile this code -->
     <maven.compiler.source>17</maven.compiler.source>
     <maven.compiler.target>17</maven.compiler.target>
   </properties>
@@ -74,7 +74,7 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <configuration>
           <compilerArgs combine.children="append">
-            <compilerArg>${extraJavaVectorArgs}</compilerArg>
+            <compilerArg>--add-modules=jdk.incubator.vector</compilerArg>
           </compilerArgs>
         </configuration>
       </plugin>
@@ -83,7 +83,7 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-failsafe-plugin</artifactId>
         <configuration>
-          <argLine>${extraJavaVectorArgs}</argLine>
+          <argLine>--add-modules=jdk.incubator.vector</argLine>
         </configuration>
       </plugin>
 
@@ -91,7 +91,7 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
         <configuration>
-          <argLine>${extraJavaVectorArgs}</argLine>
+          <argLine>--add-modules=jdk.incubator.vector</argLine>
         </configuration>
       </plugin>
 
@@ -99,7 +99,7 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
         <configuration>
-          <additionalJOption>${extraJavaVectorArgs}</additionalJOption>>
+          <additionalJOption>--add-modules=jdk.incubator.vector</additionalJOption>>
         </configuration>
       </plugin>
 
@@ -130,20 +130,4 @@
       </plugin>
     </plugins>
   </build>
-
-  <profiles>
-    <profile>
-      <id>jdk9+</id>
-      <activation>
-        <jdk>[9,)</jdk>
-      </activation>
-      <properties>
-        <!-- release takes precedence over source/target if java version is 9 or higher -->
-        <maven.compiler.release>17</maven.compiler.release>
-        <extraJavaVectorArgs>
-          --add-modules=jdk.incubator.vector
-        </extraJavaVectorArgs>
-      </properties>
-    </profile>
-  </profiles>
 </project>
diff --git a/pom.xml b/pom.xml
index 71d0615727..bcf2de7531 100644
--- a/pom.xml
+++ b/pom.xml
@@ -69,8 +69,8 @@
   </mailingLists>
 
   <properties>
-    <maven.compiler.source>1.8</maven.compiler.source>
-    <maven.compiler.target>1.8</maven.compiler.target>
+    <maven.compiler.source>11</maven.compiler.source>
+    <maven.compiler.target>11</maven.compiler.target>
     <github.global.server>github</github.global.server>
     <jackson.groupId>com.fasterxml.jackson.core</jackson.groupId>
     <jackson.datatype.groupId>com.fasterxml.jackson.datatype</jackson.datatype.groupId>
@@ -246,7 +246,7 @@
           <sourceFileExcludes>
             <sourceFileExclude>**/generated-sources/**/*.java</sourceFileExclude>
           </sourceFileExcludes>
-          <source>8</source>
+          <source>11</source>
           <quiet>true</quiet>
         </configuration>
       </plugin>
@@ -383,7 +383,7 @@
           <sourceFileExcludes>
             <sourceFileExclude>**/generated-sources/**/*.java</sourceFileExclude>
           </sourceFileExcludes>
-          <source>8</source>
+          <source>11</source>
           <quiet>true</quiet>
         </configuration>
       </plugin>
@@ -629,17 +629,6 @@
   </build>
 
   <profiles>
-    <profile>
-      <id>jdk9+</id>
-      <activation>
-        <jdk>[9,)</jdk>
-      </activation>
-      <properties>
-        <!-- release takes precedence over source/target if java version is 9 or higher -->
-        <maven.compiler.release>8</maven.compiler.release>
-      </properties>
-    </profile>
-
     <!-- Profile for tests to have more output -->
     <profile>
       <id>verbose-test</id>

From 896c13173e799fb5125c39cadf96ec2db255948e Mon Sep 17 00:00:00 2001
From: Fokko Driesprong <fokko@apache.org>
Date: Tue, 16 Sep 2025 14:30:04 +0200
Subject: [PATCH 2/3] Remove JDK21 for now

---
 .github/workflows/ci-hadoop3.yml     | 2 +-
 .github/workflows/vector-plugins.yml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci-hadoop3.yml b/.github/workflows/ci-hadoop3.yml
index 61ed3ba90c..7ce1820cd2 100644
--- a/.github/workflows/ci-hadoop3.yml
+++ b/.github/workflows/ci-hadoop3.yml
@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ { setup: '11', maven: '11' }, { setup: '17', maven: '17' }, { setup: '21', maven: '21' } ]
+        java: [ { setup: '11', maven: '11' }, { setup: '17', maven: '17' } ]
         codes: [ 'uncompressed,brotli', 'gzip,snappy' ]
     name: Build Parquet with JDK ${{ matrix.java.setup }} and ${{ matrix.codes }}
 
diff --git a/.github/workflows/vector-plugins.yml b/.github/workflows/vector-plugins.yml
index 496753d475..f02ac052e0 100644
--- a/.github/workflows/vector-plugins.yml
+++ b/.github/workflows/vector-plugins.yml
@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ '17', '21' ]
+        java: [ '17' ]
         codes: [ 'uncompressed' ]
     name: Build Parquet with JDK ${{ matrix.java }} and ${{ matrix.codes }}
 

From 1f3ecffaf66948619f1eff299222537f081435cd Mon Sep 17 00:00:00 2001
From: Fokko Driesprong <fokko@apache.org>
Date: Wed, 17 Sep 2025 09:54:22 +0200
Subject: [PATCH 3/3] Move to `maven.compiler.release`

---
 parquet-plugins/parquet-encoding-vector/pom.xml | 3 +--
 pom.xml                                         | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/parquet-plugins/parquet-encoding-vector/pom.xml b/parquet-plugins/parquet-encoding-vector/pom.xml
index 6157070c2d..822838d860 100644
--- a/parquet-plugins/parquet-encoding-vector/pom.xml
+++ b/parquet-plugins/parquet-encoding-vector/pom.xml
@@ -36,8 +36,7 @@
 
   <properties>
     <!-- Those properties prevent Java 11 to try and compile this code -->
-    <maven.compiler.source>17</maven.compiler.source>
-    <maven.compiler.target>17</maven.compiler.target>
+    <maven.compiler.release>17</maven.compiler.release>
   </properties>
 
   <dependencies>
diff --git a/pom.xml b/pom.xml
index bcf2de7531..59c985417f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -69,8 +69,7 @@
   </mailingLists>
 
   <properties>
-    <maven.compiler.source>11</maven.compiler.source>
-    <maven.compiler.target>11</maven.compiler.target>
+    <maven.compiler.release>11</maven.compiler.release>
     <github.global.server>github</github.global.server>
     <jackson.groupId>com.fasterxml.jackson.core</jackson.groupId>
     <jackson.datatype.groupId>com.fasterxml.jackson.datatype</jackson.datatype.groupId>