eugenegujing opened a new issue, #8933:
URL: https://github.com/apache/texera/issues/8933
### What happened?
When a workflow opens, `ComputingUnitSelectionComponent.selectInitialUnit`
restores a unit in this order: the unit remembered for the workflow if it is
still listed, else the unit of the workflow's last execution, else the first
Running unit when the workflow has never run. The remembered-unit step checks
the unit list first (`computing-unit-selection.component.ts:368-397`). The
last-execution step does not:
```ts
//
frontend/src/app/workspace/component/power-button/computing-unit-selection.component.ts:412-425
next: (latestWorkflowExecution: WorkflowExecutionsEntry) => {
if (stillShown()) {
if (selectUnit) {
this.selectComputingUnit(wid, latestWorkflowExecution.cuId);
}
this.lastExecutionWhid = latestWorkflowExecution.whId ??
undefined;
this.applyWarehousePreselect();
}
},
error: () => {
const runningUnit = this.allComputingUnits.find(unit =>
unit.status === "Running");
if (selectUnit && stillShown() && runningUnit) {
this.selectComputingUnit(wid, runningUnit.computingUnit.cuid);
}
```
Two defects follow:
- `/api/executions/{wid}/latest` also returns terminated units. For such a
unit, `ComputingUnitStatusService.selectComputingUnit` misses its cache,
refreshes the list and waits for that `cuid` to appear
(`computing-unit-status.service.ts:193-205`), which never happens. The workflow
opens with no unit selected and the run button reads "Computing Unit", even
while another unit is Running. The fallback to a Running unit runs only when
the lookup fails, so it never helps here.
- That fallback reads `allComputingUnits` synchronously, so for a workflow
that has never run it also selects nothing when the unit list has not loaded
yet.
Reproduced in Chrome with local units. The workflow last ran on "Analytics
Unit":
<img width="1512" height="805" alt="Image"
src="https://github.com/user-attachments/assets/e2d57c75-0393-4798-8156-4d301004c34d";
/>
After terminating "Analytics Unit" and reloading, "My Computing Unit" is
Running but nothing is selected:
<img width="1512" height="805" alt="Image"
src="https://github.com/user-attachments/assets/c4e8d9db-936b-44bd-8d70-4ccb70b86b50";
/>
### How to reproduce?
1. Create two local computing units; both are Running.
2. Open a workflow, select unit A, run it, and wait for it to complete.
3. Terminate unit A from the unit dropdown.
4. Reload the workflow. No unit is selected, although unit B is Running.
### Version/Branch
1.4.0-incubating-SNAPSHOT (main)
### Commit Hash (Optional)
_No response_
### What browsers are you seeing the problem on?
_No response_
### Relevant log output
```shell
```
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