Github user cnauroth commented on the issue:
https://github.com/apache/spark/pull/14659
Hello @Sherry302 . Thank you for the patch.
From the HDFS perspective, we recommend against using spaces in the value
of the caller context. The HDFS audit log frequently gets parsed by
administrators using ad-hoc scripting. Spaces in the fields can make this more
challenging for them. For example, if they used an awk script that parsed $NF
expecting to find the callerContext, then the "on Spark" at the end would cause
it to return "Spark" instead of the full caller context.
May I suggest prepending "Spark" instead? Perhaps something like this:
callerContext=Spark_JobId_0_StageID_0_stageAttemptId_0_taskID_0_attemptNumber_0
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