Restore 8.19.0 in constants and build (#132139)

Author: rjernst

.buildkite/pipelines/intake.yml

@@ -65,7 +65,7 @@ steps:
         timeout_in_minutes: 300
         matrix:
           setup:
-            BWC_VERSION: ["8.17.10", "8.18.5", "9.0.5", "9.1.1"]
+            BWC_VERSION: ["8.17.10", "8.18.5", "8.19.0", "9.0.5", "9.1.1"]
         agents:
           provider: gcp
           image: family/elasticsearch-ubuntu-2404

.buildkite/pipelines/periodic-packaging.yml

@@ -334,6 +334,22 @@ steps:
         env:
           BWC_VERSION: 8.18.5
 
+      - label: "{{matrix.image}} / 8.19.0 / packaging-tests-upgrade"
+        command: ./.ci/scripts/packaging-test.sh -Dbwc.checkout.align=true destructiveDistroUpgradeTest.v8.19.0
+        timeout_in_minutes: 300
+        matrix:
+          setup:
+            image:
+              - rocky-8
+              - ubuntu-2404
+        agents:
+          provider: gcp
+          image: family/elasticsearch-{{matrix.image}}
+          machineType: custom-16-32768
+          buildDirectory: /dev/shm/bk
+        env:
+          BWC_VERSION: 8.19.0
+
       - label: "{{matrix.image}} / 9.0.5 / packaging-tests-upgrade"
         command: ./.ci/scripts/packaging-test.sh -Dbwc.checkout.align=true destructiveDistroUpgradeTest.v9.0.5
         timeout_in_minutes: 300

.buildkite/pipelines/periodic.yml

@@ -363,6 +363,25 @@ steps:
             - signal_reason: agent_stop
               limit: 3
 
+      - label: 8.19.0 / bwc
+        command: .ci/scripts/run-gradle.sh -Dbwc.checkout.align=true v8.19.0#bwcTest
+        timeout_in_minutes: 300
+        agents:
+          provider: gcp
+          image: family/elasticsearch-ubuntu-2404
+          machineType: n1-standard-32
+          buildDirectory: /dev/shm/bk
+          preemptible: true
+        env:
+          BWC_VERSION: 8.19.0
+        retry:
+          automatic:
+            - exit_status: "-1"
+              limit: 3
+              signal_reason: none
+            - signal_reason: agent_stop
+              limit: 3
+
       - label: 9.0.5 / bwc
         command: .ci/scripts/run-gradle.sh -Dbwc.checkout.align=true v9.0.5#bwcTest
         timeout_in_minutes: 300
@@ -468,7 +487,7 @@ steps:
           setup:
             ES_RUNTIME_JAVA:
               - openjdk21
-            BWC_VERSION: ["8.17.10", "8.18.5", "9.0.5", "9.1.1"]
+            BWC_VERSION: ["8.17.10", "8.18.5", "8.19.0", "9.0.5", "9.1.1"]
         agents:
           provider: gcp
           image: family/elasticsearch-ubuntu-2404
@@ -512,7 +531,7 @@ steps:
             ES_RUNTIME_JAVA:
               - openjdk21
               - openjdk23
-            BWC_VERSION: ["8.17.10", "8.18.5", "9.0.5", "9.1.1"]
+            BWC_VERSION: ["8.17.10", "8.18.5", "8.19.0", "9.0.5", "9.1.1"]
         agents:
           provider: gcp
           image: family/elasticsearch-ubuntu-2404

.ci/bwcVersions

@@ -18,5 +18,6 @@ BWC_VERSION:
   - "8.16.6"
   - "8.17.10"
   - "8.18.5"
+  - "8.19.0"
   - "9.0.5"
   - "9.1.1"

.ci/snapshotBwcVersions

@@ -1,5 +1,6 @@
 BWC_VERSION:
   - "8.17.10"
   - "8.18.5"
+  - "8.19.0"
   - "9.0.5"
   - "9.1.1"

server/src/main/java/org/elasticsearch/Version.java

@@ -212,6 +212,7 @@ public class Version implements VersionId<Version>, ToXContentFragment {
     public static final Version V_8_18_3 = new Version(8_18_03_99);
     public static final Version V_8_18_4 = new Version(8_18_04_99);
     public static final Version V_8_18_5 = new Version(8_18_05_99);
+    public static final Version V_8_19_0 = new Version(8_19_00_99);
     public static final Version V_9_0_0 = new Version(9_00_00_99);
     public static final Version V_9_0_1 = new Version(9_00_01_99);
     public static final Version V_9_0_2 = new Version(9_00_02_99);