Yang Jie created SPARK-39296:
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Summary: Replcace `Array.toString` with `Array.mkString`
Key: SPARK-39296
URL: https://issues.apache.org/jira/browse/SPARK-39296
Project: Spark
Issue Type: Bug
Components: Spark Core, SQL
Affects Versions: 3.4.0
Reporter: Yang Jie
Some code in Spark as follows:
{code:java}
val appDirs = workDir.listFiles()
if (appDirs == null) {
throw new IOException("ERROR: Failed to list files in " + appDirs)
} {code}
appDirs is an `Array` and `Array.toString` will print as `className#hashCode`,
this result seems meaningless and Array.mkString should be used.
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