messere1 opened a new issue, #1686: URL: https://github.com/apache/rocketmq-dashboard/issues/1686
### Description The shared `downloadBlob` helper appends a temporary anchor, calls `anchor.click()`, then removes the anchor and revokes the Blob URL. Cleanup is not protected by `finally`. If browser download activation throws (for example because it is blocked by an embedded browser policy or an overridden click implementation), the exception correctly reaches the caller, but the hidden anchor remains in the document and the object URL is never revoked. Repeated failed exports leak both DOM nodes and Blob-backed memory. The helper is shared by audit, alert-rule, DLQ, and message exports. ### Expected behavior Download errors should still propagate, while the temporary anchor and object URL are always cleaned up. ### Actual behavior Cleanup runs only after a successful click. ### Proposed fix Wrap download activation in `try/finally`, retain the existing success behavior, and add a unit test that forces `click()` to throw and verifies cleanup plus error propagation. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
