[jira] [Created] (SPARK-3979) Yarn backend's default file replication should match HDFS's default one

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

Marcelo Vanzin created SPARK-3979:
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             Summary: Yarn backend's default file replication should match HDFS's default one
                 Key: SPARK-3979
                 URL: https://issues.apache.org/jira/browse/SPARK-3979
             Project: Spark
          Issue Type: Bug
          Components: YARN
            Reporter: Marcelo Vanzin
            Priority: Minor


This code in ClientBase.scala sets the replication used for files uploaded to HDFS:

{{noformat}}
    val replication = sparkConf.getInt("spark.yarn.submit.file.replication", 3).toShort
{{noformat}}

Instead of a hardcoded "3" (which is the default value for HDFS), it should be using the default value from the HDFS conf ("dfs.replication").



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