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Posted to reviews@spark.apache.org by "vicennial (via GitHub)" <gi...@apache.org> on 2023/04/21 05:37:43 UTC

[GitHub] [spark] vicennial opened a new pull request, #40894: [SPARK-43198][CONNECT] Fix "Could not initialise class ammonite..." error when using filter

vicennial opened a new pull request, #40894:
URL: https://github.com/apache/spark/pull/40894

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   ### What changes were proposed in this pull request?
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   This PR makes the ammonite REPL use the `CodeClassWrapper` mode for classfile generation (make ammonite generate classes instead of objects) and changes the UDF serialization from lazy to eager.
   
   
   ### Why are the changes needed?
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   The changes have the following impact:
   - `CodeClassWrapper` change
     - Fixes the `io.grpc.StatusRuntimeException: UNKNOWN: ammonite/repl/ReplBridge$` error when trying to use the `filter` method (see [jira](https://issues.apache.org/jira/browse/SPARK-43198) for reproduction)
   - Lazy to eager UDF serialization
     - With class-based generation, UDFs defined using `def` would hit CNFE because the `ScalarUserDefinedFuntion` class gets captured during serialisation and sent over to the server (the class is a client-only class).
   
   ### Does this PR introduce _any_ user-facing change?
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   Yes. There are two significant changes:
   
   - Filter works as expected when using "in-place" lambda expressions such as in `spark.range(10).filter(n => n % 2 == 0).collectAsList()`
   - UDFs defined using a lambda expression which is stored in a `val` fail due to deserialisation issues on the server.
     - Root cause is currently unknown but a ticket has been [filed](https://issues.apache.org/jira/browse/SPARK-43227) to address the issue.
     - Example: see [this](https://github.com/apache/spark/compare/master...vicennial:spark:SPARK-43198?expand=1#diff-8d8a214eff5d2c8d523b59f2a39758ddfa84912ef7d4e0276f54e979a58f88e0R120-R129) test.
     - Currently, it is a compromise to get `filter` working as expected since that bug is a higher-impact due to it impacting the "general" way of using the method.
   
   ### How was this patch tested?
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   New unit test.
   


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[GitHub] [spark] hvanhovell closed pull request #40894: [SPARK-43198][CONNECT] Fix "Could not initialise class ammonite..." error when using filter

Posted by "hvanhovell (via GitHub)" <gi...@apache.org>.
hvanhovell closed pull request #40894: [SPARK-43198][CONNECT] Fix "Could not initialise class ammonite..." error when using filter
URL: https://github.com/apache/spark/pull/40894


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[GitHub] [spark] hvanhovell commented on pull request #40894: [SPARK-43198][CONNECT] Fix "Could not initialise class ammonite..." error when using filter

Posted by "hvanhovell (via GitHub)" <gi...@apache.org>.
hvanhovell commented on PR #40894:
URL: https://github.com/apache/spark/pull/40894#issuecomment-1523687453

   Merging.


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