Revert "[#30789] Add support for Flink 1.18 (#31062)"

This reverts commit 45fe4f9.

.github/workflows/beam_PostCommit_Java_Tpcds_Flink.yml

@@ -101,5 +101,5 @@ jobs:
         with:
           gradle-command: :sdks:java:testing:tpcds:run
           arguments: |
-            -Ptpcds.runner=:runners:flink:1.18 \
+            -Ptpcds.runner=:runners:flink:1.17 \
             "-Ptpcds.args=${{env.tpcdsBigQueryArgs}} ${{env.tpcdsInfluxDBArgs}} ${{ env.GRADLE_COMMAND_ARGUMENTS }} --queries=${{env.tpcdsQueriesArg}}" \

.github/workflows/beam_PostCommit_Java_ValidatesRunner_Flink.yml

@@ -78,7 +78,7 @@ jobs:
       - name: run validatesRunner script
         uses: ./.github/actions/gradle-command-self-hosted-action
         with:
-          gradle-command: :runners:flink:1.18:validatesRunner
+          gradle-command: :runners:flink:1.17:validatesRunner
       - name: Archive JUnit Test Results
         uses: actions/upload-artifact@v4
         if: ${{ !success() }}

CHANGES.md

@@ -57,7 +57,6 @@
 
 ## Highlights
 
-* Added FlinkRunner for Flink 1.18. ([#30789](https://github.com/apache/beam/issues/30789))
 * New highly anticipated feature X added to Python SDK ([#X](https://github.com/apache/beam/issues/X)).
 * New highly anticipated feature Y added to Java SDK ([#Y](https://github.com/apache/beam/issues/Y)).
 

gradle.properties

@@ -39,6 +39,6 @@ docker_image_default_repo_root=apache
 docker_image_default_repo_prefix=beam_
 
 # supported flink versions
-flink_versions=1.14,1.15,1.16,1.17,1.18
+flink_versions=1.14,1.15,1.16,1.17
 # supported python versions
 python_versions=3.8,3.9,3.10,3.11

runners/flink/flink_runner.gradle

@@ -376,7 +376,7 @@ tasks.register("validatesRunnerSickbay", Test) {
   }
 }
 
-// Generates :runners:flink:1.18:runQuickstartJavaFlinkLocal
+// Generates :runners:flink:1.17:runQuickstartJavaFlinkLocal
 createJavaExamplesArchetypeValidationTask(type: 'Quickstart', runner: 'FlinkLocal')
 
 tasks.register("examplesIntegrationTest", Test) {

sdks/go/examples/stringsplit/stringsplit.go

@@ -21,7 +21,7 @@
 // 1. From a command line, navigate to the top-level beam/ directory and run
 // the Flink job server:
 //
-//	./gradlew :runners:flink:1.18:job-server:runShadow -Djob-host=localhost -Dflink-master=local
+//	./gradlew :runners:flink:1.17:job-server:runShadow -Djob-host=localhost -Dflink-master=local
 //
 // 2. The job server is ready to receive jobs once it outputs a log like the
 // following: `JobService started on localhost:8099`. Take note of the endpoint

settings.gradle.kts

@@ -137,10 +137,6 @@ include(":runners:flink:1.16:job-server-container")
 include(":runners:flink:1.17")
 include(":runners:flink:1.17:job-server")
 include(":runners:flink:1.17:job-server-container")
-// Flink 1.18
-include(":runners:flink:1.18")
-include(":runners:flink:1.18:job-server")
-include(":runners:flink:1.18:job-server-container")
 /* End Flink Runner related settings */
 include(":runners:twister2")
 include(":runners:google-cloud-dataflow-java")