tweise commented on code in PR #165:
URL:
https://github.com/apache/flink-kubernetes-operator/pull/165#discussion_r851041385
##########
flink-kubernetes-operator/src/main/java/org/apache/flink/kubernetes/operator/reconciler/deployment/ApplicationReconciler.java:
##########
@@ -102,36 +111,84 @@ public void reconcile(FlinkDeployment flinkApp, Context
context, Configuration e
}
if (currentJobState == JobState.SUSPENDED && desiredJobState ==
JobState.RUNNING) {
if (upgradeMode == UpgradeMode.STATELESS) {
- deployFlinkJob(flinkApp, effectiveConfig,
Optional.empty());
- } else if (upgradeMode == UpgradeMode.LAST_STATE
- || upgradeMode == UpgradeMode.SAVEPOINT) {
- restoreFromLastSavepoint(flinkApp, effectiveConfig);
+ deployFlinkJob(currentJobSpec, status, effectiveConfig,
Optional.empty());
+ } else {
+ restoreFromLastSavepoint(currentJobSpec, status,
effectiveConfig);
}
stateAfterReconcile = JobState.RUNNING;
}
- IngressUtils.updateIngressRules(flinkApp, effectiveConfig,
kubernetesClient);
+ IngressUtils.updateIngressRules(
+ deployMeta, currentDeploySpec, effectiveConfig,
kubernetesClient);
ReconciliationUtils.updateForSpecReconciliationSuccess(flinkApp,
stateAfterReconcile);
- } else if (SavepointUtils.shouldTriggerSavepoint(flinkApp) &&
isJobRunning(flinkApp)) {
+ } else if (ReconciliationUtils.shouldRollBack(reconciliationStatus,
effectiveConfig)) {
+ rollbackApplication(flinkApp);
+ } else if (SavepointUtils.shouldTriggerSavepoint(currentJobSpec,
status)
+ && isJobRunning(status)) {
triggerSavepoint(flinkApp, effectiveConfig);
ReconciliationUtils.updateSavepointReconciliationSuccess(flinkApp);
+ } else {
+ LOG.info("Deployment is fully reconciled, nothing to do.");
}
}
+ private void rollbackApplication(FlinkDeployment flinkApp) throws
Exception {
+ ReconciliationStatus reconciliationStatus =
flinkApp.getStatus().getReconciliationStatus();
+
+ if (reconciliationStatus.getState() !=
ReconciliationStatus.State.ROLLING_BACK) {
+ LOG.warn("Preparing to roll back to last stable spec.");
+ if (flinkApp.getStatus().getError() == null) {
+ flinkApp.getStatus()
+ .setError(
+ "Deployment is not ready within the configured
timeout, rolling-back.");
+ }
+
reconciliationStatus.setState(ReconciliationStatus.State.ROLLING_BACK);
+ return;
+ }
+
+ LOG.warn("Executing roll-back operation");
+
+ FlinkDeploymentSpec rollbackSpec =
reconciliationStatus.deserializeLastStableSpec();
+ Configuration rollbackConfig =
+ FlinkUtils.getEffectiveConfig(flinkApp.getMetadata(),
rollbackSpec, defaultConfig);
+
+ UpgradeMode upgradeMode = flinkApp.getSpec().getJob().getUpgradeMode();
+
+ suspendJob(
Review Comment:
Agreed that we should not change the spec, which in some case may also not
be possible due to access control. The reason not to change
`lastReconciledSpec` is more related to the implementation as it pertains to
the status, nevertheless I think the current approach makes sense.
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