saurabhd336 opened a new pull request, #3192: URL: https://github.com/apache/celeborn/pull/3192
This ports Whenever a `WorkerPartitionReader` is recreated (due celeborn worker restarts / any other chunk fetch failure), the entire shuffle partition file is re-read from beginning, discarding already read chunks in `CelebornInputStream` based on the batchIdSet metadata maintained. This can be improved (only for cases where shuffle data is unreplicated) by skipping already read chunk id since they'd be discarded anyway. This improves overall shuffle read performance (reducer's total time, network usage etc). Allow skipping already read shuffle chunks No UTs added Closes #3132 from saurabhd336/skipReadChunks. Authored-by: Saurabh Dubey <[email protected]> <!-- Thanks for sending a pull request! Here are some tips for you: - Make sure the PR title start w/ a JIRA ticket, e.g. '[CELEBORN-XXXX] Your PR title ...'. - Be sure to keep the PR description updated to reflect all changes. - Please write your PR title to summarize what this PR proposes. - If possible, provide a concise example to reproduce the issue for a faster review. --> ### What changes were proposed in this pull request? ### Why are the changes needed? ### Does this PR introduce _any_ user-facing change? ### How was this patch tested? -- 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]
