we1she2 commented on issue #10452:
URL: https://github.com/apache/seatunnel/issues/10452#issuecomment-3851409637
> **COMMENT>> Thank you for reporting this issue. Based on the code
analysis, the root cause is clear:
>
> When `isStartWithSavePoint=true`,
`CheckpointService.getLatestCheckpointData(jobId)` is called. According to
`CheckpointStorage.getLatestCheckpoint()` documentation ("If all pipeline
checkpoint data fails, an exception is throw"), this throws
`CheckpointStorageException` when no checkpoint exists for the job.
>
> The REST API layer (likely `RestHttpPostCommandProcessor`) does not handle
this exception gracefully, resulting in HTTP 500 instead of a user-friendly
error.
>
> **Suggested fix:** Catch `CheckpointStorageException` in the REST API
submit-job handler and return HTTP 400 with a clear message like "No checkpoint
found for the job. Cannot start with save point."
>
> **Missing info to proceed:**
>
> 1. Which SeaTunnel version are you using?
> 2. Which checkpoint storage implementation (LocalFile, HDFS, or other)?
> 3. Can you share the full HTTP response body (error stack trace)?
AI？
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