diff --git a/dev-support/Jenkinsfile b/dev-support/Jenkinsfile
index 51225268b653a..a77152dd47ebc 100644
--- a/dev-support/Jenkinsfile
+++ b/dev-support/Jenkinsfile
@@ -83,27 +83,6 @@ pipeline {
         // optional stages after the first one.
         stage ('setup sources') {
             steps {
-                dir("${WORKSPACE}/centos-7") {
-                    sh '''#!/usr/bin/env bash
-
-                    cp -Rp ${WORKSPACE}/src ${WORKSPACE}/centos-7
-                    '''
-                }
-
-                dir("${WORKSPACE}/centos-8") {
-                    sh '''#!/usr/bin/env bash
-
-                    cp -Rp ${WORKSPACE}/src ${WORKSPACE}/centos-8
-                    '''
-                }
-
-                dir("${WORKSPACE}/debian-10") {
-                    sh '''#!/usr/bin/env bash
-
-                    cp -Rp ${WORKSPACE}/src ${WORKSPACE}/debian-10
-                    '''
-                }
-
                 dir("${WORKSPACE}/ubuntu-focal") {
                     sh '''#!/usr/bin/env bash
 
@@ -113,144 +92,6 @@ pipeline {
             }
         }
 
-        // This is an optional stage which runs only when there's a change in
-        // C++/C++ build/platform.
-        // This stage serves as a means of cross platform validation, which is
-        // really needed to ensure that any C++ related/platform change doesn't
-        // break the Hadoop build on Centos 7.
-        stage ('precommit-run Centos 7') {
-            environment {
-                SOURCEDIR = "${WORKSPACE}/centos-7/src"
-                PATCHDIR = "${WORKSPACE}/centos-7/out"
-                DOCKERFILE = "${SOURCEDIR}/dev-support/docker/Dockerfile_centos_7"
-                IS_OPTIONAL = 1
-            }
-
-            steps {
-                withCredentials(getGithubCreds()) {
-                    sh '''#!/usr/bin/env bash
-
-                    chmod u+x "${SOURCEDIR}/dev-support/jenkins.sh"
-                    "${SOURCEDIR}/dev-support/jenkins.sh" run_ci
-                    '''
-                }
-            }
-
-            post {
-                // Since this is an optional platform, we want to copy the artifacts
-                // and archive it only if the build fails, to help with debugging.
-                failure {
-                    sh '''#!/usr/bin/env bash
-
-                    cp -Rp "${WORKSPACE}/centos-7/out" "${WORKSPACE}"
-                    '''
-                    archiveArtifacts "out/**"
-                }
-
-                cleanup() {
-                    script {
-                        sh '''#!/usr/bin/env bash
-
-                        chmod u+x "${SOURCEDIR}/dev-support/jenkins.sh"
-                        "${SOURCEDIR}/dev-support/jenkins.sh" cleanup_ci_proc
-                        '''
-                    }
-                }
-            }
-        }
-
-        // This is an optional stage which runs only when there's a change in
-        // C++/C++ build/platform.
-        // This stage serves as a means of cross platform validation, which is
-        // really needed to ensure that any C++ related/platform change doesn't
-        // break the Hadoop build on Centos 8.
-        stage ('precommit-run Centos 8') {
-            environment {
-                SOURCEDIR = "${WORKSPACE}/centos-8/src"
-                PATCHDIR = "${WORKSPACE}/centos-8/out"
-                DOCKERFILE = "${SOURCEDIR}/dev-support/docker/Dockerfile_centos_8"
-                IS_OPTIONAL = 1
-            }
-
-            steps {
-                withCredentials(getGithubCreds()) {
-                        sh '''#!/usr/bin/env bash
-
-                        chmod u+x "${SOURCEDIR}/dev-support/jenkins.sh"
-                        "${SOURCEDIR}/dev-support/jenkins.sh" run_ci
-                        '''
-                }
-            }
-
-            post {
-                // Since this is an optional platform, we want to copy the artifacts
-                // and archive it only if the build fails, to help with debugging.
-                failure {
-                    sh '''#!/usr/bin/env bash
-
-                    cp -Rp "${WORKSPACE}/centos-8/out" "${WORKSPACE}"
-                    '''
-                    archiveArtifacts "out/**"
-                }
-
-                cleanup() {
-                    script {
-                        sh '''#!/usr/bin/env bash
-
-                        chmod u+x "${SOURCEDIR}/dev-support/jenkins.sh"
-                        "${SOURCEDIR}/dev-support/jenkins.sh" cleanup_ci_proc
-                        '''
-                    }
-                }
-            }
-        }
-
-        // This is an optional stage which runs only when there's a change in
-        // C++/C++ build/platform.
-        // This stage serves as a means of cross platform validation, which is
-        // really needed to ensure that any C++ related/platform change doesn't
-        // break the Hadoop build on Debian 10.
-        stage ('precommit-run Debian 10') {
-            environment {
-                SOURCEDIR = "${WORKSPACE}/debian-10/src"
-                PATCHDIR = "${WORKSPACE}/debian-10/out"
-                DOCKERFILE = "${SOURCEDIR}/dev-support/docker/Dockerfile_debian_10"
-                IS_OPTIONAL = 1
-            }
-
-            steps {
-                withCredentials(getGithubCreds()) {
-                    sh '''#!/usr/bin/env bash
-
-                    chmod u+x "${SOURCEDIR}/dev-support/jenkins.sh"
-                    "${SOURCEDIR}/dev-support/jenkins.sh" run_ci
-                    '''
-                }
-            }
-
-            post {
-                // Since this is an optional platform, we want to copy the artifacts
-                // and archive it only if the build fails, to help with debugging.
-                failure {
-                    sh '''#!/usr/bin/env bash
-
-                    cp -Rp "${WORKSPACE}/debian-10/out" "${WORKSPACE}"
-                    '''
-                    archiveArtifacts "out/**"
-                }
-
-                cleanup() {
-                    script {
-                        sh '''#!/usr/bin/env bash
-
-                        chmod u+x "${SOURCEDIR}/dev-support/jenkins.sh"
-                        "${SOURCEDIR}/dev-support/jenkins.sh" cleanup_ci_proc
-                        '''
-                    }
-                }
-            }
-        }
-
         // We want to use Ubuntu Focal as our main CI and thus, this stage
         // isn't optional (runs for all the PRs).
         stage ('precommit-run Ubuntu focal') {