chenboat commented on issue #4914: [POC] By-passing deep-store requirement for Realtime segment completion URL: https://github.com/apache/incubator-pinot/pull/4914#issuecomment-568131589 > Can you add some more details in your design doc? Specifically: I will add these details to the design doc. > > 1. The algorithm on the server side during commit. Correct me if I am wrong, but I think you want to commit the metadata, and try uploading the segment to its destnation (whether pinot-fs or controller) in the background. Am I right? Or, is it that you attempt to upload the segment, and only if it fails, you commit the metadata and move on? (I think we should think through this, the latter seems better to me). The codes tried the first approach: i.e., if the enableUploadToController is set as false, the server will first commit metadata to the controller, and if the commit is successful, do a background upload to the PinotFS. > 2. Document the error handling scenario. What happens when the segment upload fails but the commit succeeds ? (the use case for which we are building all this). What happens if another server gets a "download" but the committer has not gotten to ONLINE state yet? I think there are many states here that we need to design correctly.
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