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Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2021/01/18 04:49:50 UTC

[GitHub] [iotdb] SteveYurongSu opened a new pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

SteveYurongSu opened a new pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511


   There are several points that can be optimized:
   
   1. Avoid Java boxing / unboxing in LRUCache and SafetyLine
   
   2. Avoid unnecessary memory copy in SerializableRowReordList
   
   3. Memory control:
   
     3.1 Disable memory control when there are no text fields
   
     3.2 Stricter eviction upper bound
   
   4. Use lighter data structures: RowRecord -> Object[] 
   
   JIRA: https://issues.apache.org/jira/browse/IOTDB-1113


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[GitHub] [iotdb] SteveYurongSu commented on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
SteveYurongSu commented on pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511#issuecomment-762003229


   Performance report:
   
   Data: root.sg.d.s1, INT32, 100 000 000 points
   
   SQL | Execution Time | Ratio
   -- | -- | --
   select s1 from root.sg.d; | 19636 ms | 100%
   BEFORE OPTIMIZATION - select do_nothing(s1) from root.sg.d; | 76446 ms | 389.3%
   AFTER OPTIMIZATION - select do_nothing(s1) from root.sg.d; | 35547 ms | 180.0%
   
   After optimization, the execution time of the do_nothing function is reduced by (76446-35547) / 76446 = 53.5%.
   


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[GitHub] [iotdb] JackieTien97 merged pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
JackieTien97 merged pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511


   


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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] commented on pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511#issuecomment-763575895


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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] commented on pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511#issuecomment-763306416


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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
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URL: https://github.com/apache/iotdb/pull/2511#issuecomment-762774720


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[GitHub] [iotdb] JackieTien97 merged pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
JackieTien97 merged pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511


   


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[GitHub] [iotdb] sonarcloud[bot] removed a comment on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] removed a comment on pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511#issuecomment-761980089


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[GitHub] [iotdb] sonarcloud[bot] removed a comment on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] removed a comment on pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511#issuecomment-763313256


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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] commented on pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511#issuecomment-762322406


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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] commented on pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511#issuecomment-763313256


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[GitHub] [iotdb] sonarcloud[bot] removed a comment on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] removed a comment on pull request #2511:
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[GitHub] [iotdb] sonarcloud[bot] removed a comment on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] removed a comment on pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511#issuecomment-762322406


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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #2511: [IOTDB-1113] Optimize the execution efficiency of UDF

Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] commented on pull request #2511:
URL: https://github.com/apache/iotdb/pull/2511#issuecomment-762541522


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