[None][infra] add disable-cbts flag to explicitly disable CBTS (NVIDIA#15830)

Signed-off-by: Ivy Zhang <25222398+crazydemo@users.noreply.github.com>

Author: crazydemo

jenkins/L0_MergeRequest.groovy

@@ -123,6 +123,8 @@ def DEBUG_MODE = "debug"
 def DETAILED_LOG = "detailed_log"
 @Field
 def CBTS_RESULT = "cbts_result"
+@Field
+def DISABLE_CBTS = "disable_cbts"
 
 def testFilter = [
     (REUSE_TEST): gitlabParamsFromBot.get(REUSE_TEST, null),
@@ -142,6 +144,7 @@ def testFilter = [
     (AUTO_TRIGGER_TAG_LIST): [],
     (DETAILED_LOG): gitlabParamsFromBot.get(DETAILED_LOG, false),
     (CBTS_RESULT): null,
+    (DISABLE_CBTS): gitlabParamsFromBot.get((DISABLE_CBTS), false),
 ]
 
 String reuseBuild = gitlabParamsFromBot.get('reuse_build', null)
@@ -713,6 +716,13 @@ def getAutoTriggerTagList(pipeline, testFilter, globalVars) {
 
 def getCbtsResult(pipeline, testFilter, globalVars)
 {
+    // Explicit kill switch: `/bot run --disable-cbts` forces a full run.
+    if (testFilter[(DISABLE_CBTS)]) {
+        pipeline.echo("CBTS: disabled — user-specified /bot run --disable-cbts")
+        _cbtsReportDecision(pipeline, globalVars, "disabled", "user flag: disable_cbts", null)
+        return null
+    }
+
     def isOfficialPostMergeJob = (env.JOB_NAME ==~ /.*PostMerge.*/)
     if (env.alternativeTRT || isOfficialPostMergeJob) {
         pipeline.echo("CBTS: deferring — post-merge job or alternativeTRT set")

jenkins/scripts/cbts/README.md

@@ -130,6 +130,10 @@ stage-selection flag (`--stage-list`, `--extra-stage`, `--gpu-type`,
 `--test-backend`, `--skip-test`, `--add-multi-gpu-test`, `--only-multi-gpu-test`,
 `--disable-multi-gpu-test`) makes `getCbtsResult` return null.
 
+`--disable-cbts` is an explicit kill switch: `getCbtsResult` returns null
+before any narrowing, so the pipeline runs the full test set. The opt-out is
+recorded in OpenSearch with `s_cbts_status=disabled`.
+
 Orthogonal flags (`--reuse-test`, `--disable-reuse-test`, `--debug`,
 `--detailed-log`, `--disable-fail-fast`, `--high-priority`) do not affect CBTS.
 

jenkins/scripts/cbts/tools/report_cbts_decision.py

@@ -14,7 +14,7 @@
 # limitations under the License.
 """Post a CBTS decision to OpenSearch (CI-health monitoring).
 
---status <pre_merge|post_merge|fallback|deferred> [--reason <text>]
+--status <pre_merge|post_merge|fallback|deferred|disabled> [--reason <text>]
 [--decision <main.py output>] [--pr-number <n>] [--repo-root <dir>].
 Context + creds come from env. Exits 0 on failure (never blocks CI).
 """
@@ -116,7 +116,7 @@ def build_document(
 def main(argv: list[str] | None = None) -> int:
     parser = argparse.ArgumentParser(description="Post a CBTS decision to OpenSearch.")
     parser.add_argument(
-        "--status", required=True, help="pre_merge / post_merge / fallback / deferred."
+        "--status", required=True, help="pre_merge / post_merge / fallback / deferred / disabled."
     )
     parser.add_argument("--reason", default="", help="Reason text (deferred only).")
     parser.add_argument("--decision", default=None, help="Path to cbts/main.py decision JSON.")