[GitHub] [spark] heuermh edited a comment on pull request #26804: [SPARK-26346][BUILD][SQL] Upgrade parquet to 1.11.0

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heuermh edited a comment on pull request #26804:
URL: https://github.com/apache/spark/pull/26804#issuecomment-714729078


   @sunchao Until `spark.driver.userClassPathFirst`/`spark.executor.userClassPathFirst` are no longer (Experimental), or dependencies in Spark are shaded properly, having Avro 1.8.x on the Spark runtime classpath will cause runtime compatibility exceptions for downstream apps that use `parquet-avro` 1.11.x or newer, which depend on Avro 1.9.x. Or are you suggesting downstream apps use `parquet-avro` version 1.10.1 at the same time Spark depends on e.g `parquet-[column,common,encoding,format-structures,hadoop,jackson]` 1.11.x or newer? I don't know if that is possible.


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