[jira] [Created] (SPARK-27256) If the configuration is used to set the number of bytes, we'd better use `bytesConf`'.

["liuxian (JIRA)" <ji...@apache.org>]

liuxian created SPARK-27256:
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             Summary: If the configuration is used to set the number of bytes, we'd better use `bytesConf`'.
                 Key: SPARK-27256
                 URL: https://issues.apache.org/jira/browse/SPARK-27256
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core, SQL
    Affects Versions: 3.0.0
            Reporter: liuxian


Currently, if we want to configure `spark. sql. files. maxPartitionBytes` to 256 megabytes, we must set  `spark. sql. files. maxPartitionBytes=268435456`, which is very unfriendly to users.

And if we set it like this:`spark. sql. files. maxPartitionBytes=256M`, we will  encounter this exception:

_Exception in thread "main" java.lang.IllegalArgumentException: spark.sql.files.maxPartitionBytes should be long, but was 128M_
        _at org.apache.spark.internal.config.ConfigHelpers$.toNumber(ConfigBuilder.scala:34)_



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