morningman edited a comment on issue #315: FE Catalog should know the path info of each replica in BE URL: https://github.com/apache/incubator-doris/issues/315#issuecomment-439611226 1. A path hash is calculated and saved in BE when BE start 2. BE will report this path hash along with disk report and tablet report, and FE will update this info when handling report. 3. Path info in FE catalog is not persist, thus only Master FE knows it, and it will be lost if FE crashed. 4. Add a trigger that when Master FE restart or Master is changed, BE will report disk and tablet info immediately. * For now, this trigger is not implemented well, cause we don't have a uniform framework to trigger a report from different place in different situation. 5. Add path hash exhibition in Backend Proc and Tablet Proc.
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