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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2022/05/09 11:00:16 UTC

[GitHub] [incubator-doris] Lchangliang opened a new pull request, #9472: [Enhancement] Improve parquet reader

Lchangliang opened a new pull request, #9472:
URL: https://github.com/apache/incubator-doris/pull/9472

   # Proposed changes
   
   Issue Number: close #xxx
   
   ## Problem Summary:
   
   1. Modifying Arrow's Interface Parameters. Use pre_buffer/threads to speed up parquet file reading.
   2. Adding prefetch worker, cache batches.
   
   Compare:
   
   Table:
   Dup表
   3 Buckets
   1 副本
   
   Parquet Filesize:
   12.09G
   153,600,000行
   
   load_param:
   "send_batch_parallelism" = "4"
   
   Before:
   10.5MB/s。
   134383行/s
   
   After:
   52.2MB/s
   648101行/s
   
   ## Checklist(Required)
   
   1. Does it affect the original behavior: (Yes/No/I Don't know)
   2. Has unit tests been added: (Yes/No/No Need)
   3. Has document been added or modified: (Yes/No/No Need)
   4. Does it need to update dependencies: (Yes/No)
   5. Are there any changes that cannot be rolled back: (Yes/No)
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at [dev@doris.apache.org](mailto:dev@doris.apache.org) by explaining why you chose the solution you did and what alternatives you considered, etc...
   


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[GitHub] [incubator-doris] github-actions[bot] commented on pull request #9472: [Enhancement] improve parquet reader via arrow's prefetch and multi thread

Posted by GitBox <gi...@apache.org>.
github-actions[bot] commented on PR #9472:
URL: https://github.com/apache/incubator-doris/pull/9472#issuecomment-1128741877

   PR approved by anyone and no changes requested.


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[GitHub] [incubator-doris] github-actions[bot] commented on pull request #9472: [Enhancement] improve parquet reader via arrow's prefetch and multi thread

Posted by GitBox <gi...@apache.org>.
github-actions[bot] commented on PR #9472:
URL: https://github.com/apache/incubator-doris/pull/9472#issuecomment-1128845692

   PR approved by at least one committer and no changes requested.


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[GitHub] [incubator-doris] yiguolei merged pull request #9472: [Enhancement] improve parquet reader via arrow's prefetch and multi thread

Posted by GitBox <gi...@apache.org>.
yiguolei merged PR #9472:
URL: https://github.com/apache/incubator-doris/pull/9472


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