From cf89ec795f83f88f6714855d4ae06c3e6e5a3b14 Mon Sep 17 00:00:00 2001
From: Yi Hu <huuyyi@gmail.com>
Date: Mon, 15 Jun 2026 11:33:53 -0400
Subject: [PATCH] Revert "Upgrade expansion jar to java17 (#38931)"

This reverts commit b3a62ee97c7ce436fc70dfc7d13f94dd97038b1b.
---
 .github/actions/setup-environment-action/action.yml           | 2 +-
 .../workflows/beam_PreCommit_Xlang_Generated_Transforms.yml   | 2 +-
 sdks/java/expansion-service/container/Dockerfile              | 2 +-
 sdks/java/io/expansion-service/build.gradle                   | 4 ++--
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/.github/actions/setup-environment-action/action.yml b/.github/actions/setup-environment-action/action.yml
index daa3daa1cd52..06633c6c7279 100644
--- a/.github/actions/setup-environment-action/action.yml
+++ b/.github/actions/setup-environment-action/action.yml
@@ -74,7 +74,7 @@ runs:
       uses: actions/setup-java@v3
       with:
         distribution: 'temurin'
-        java-version: ${{ inputs.java-version == 'default' && ((contains(github.job, 'Xlang') || contains(github.job, 'XVR') || contains(github.job, 'PreCommit_Java')) && '17' || '11') || inputs.java-version }}
+        java-version: ${{ inputs.java-version == 'default' && '11' || inputs.java-version }}
     - name: Setup Gradle
       uses: gradle/actions/setup-gradle@50e97c2cd7a37755bbfafc9c5b7cafaece252f6e # v6.1.0
       with:
diff --git a/.github/workflows/beam_PreCommit_Xlang_Generated_Transforms.yml b/.github/workflows/beam_PreCommit_Xlang_Generated_Transforms.yml
index 1dfab40f552d..959f36234d70 100644
--- a/.github/workflows/beam_PreCommit_Xlang_Generated_Transforms.yml
+++ b/.github/workflows/beam_PreCommit_Xlang_Generated_Transforms.yml
@@ -102,7 +102,7 @@ jobs:
       - name: Setup environment
         uses: ./.github/actions/setup-environment-action
         with:
-          java-version: '17'
+          java-version: default
           python-version: ${{ matrix.python_version }}
       - name: Set PY_VER_CLEAN
         id: set_py_ver_clean
diff --git a/sdks/java/expansion-service/container/Dockerfile b/sdks/java/expansion-service/container/Dockerfile
index 513dd6b75b88..968f5cd2ac25 100644
--- a/sdks/java/expansion-service/container/Dockerfile
+++ b/sdks/java/expansion-service/container/Dockerfile
@@ -16,7 +16,7 @@
 # limitations under the License.
 ###############################################################################
 
-FROM eclipse-temurin:17
+FROM eclipse-temurin:11
 LABEL Author "Apache Beam <dev@beam.apache.org>"
 ARG TARGETOS
 ARG TARGETARCH
diff --git a/sdks/java/io/expansion-service/build.gradle b/sdks/java/io/expansion-service/build.gradle
index f7b241a75944..70a3fce538b6 100644
--- a/sdks/java/io/expansion-service/build.gradle
+++ b/sdks/java/io/expansion-service/build.gradle
@@ -25,8 +25,8 @@ applyJavaNature(
   exportJavadoc: false,
   validateShadowJar: false,
   shadowClosure: {},
-  // iceberg requires Java11+ and delta lake requires Java17+
-  requireJavaVersion: JavaVersion.VERSION_17
+  // iceberg requires Java11+
+  requireJavaVersion: JavaVersion.VERSION_11
 )
 
 // We don't want to use the latest version for the entire beam sdk since beam Java users can override it themselves.