[jira] [Created] (SPARK-3228) When DStream save RDD to hdfs , don't create directory and empty file if there are no data received from source in the batch duration .

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

Leo created SPARK-3228:
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             Summary: When DStream save RDD to hdfs , don't create directory and empty file if there are no data received from source in the batch duration .
                 Key: SPARK-3228
                 URL: https://issues.apache.org/jira/browse/SPARK-3228
             Project: Spark
          Issue Type: Improvement
          Components: Streaming
            Reporter: Leo


When I use DStream to save files to hdfs, it will create a directory and a empty file named "_SUCCESS" for each job which made in the batch duration.
But if there are no data from source for a long time , and the duration is very short(e.g. 10s), it will create so many directory and empty files in hdfs.
I don't think it is necessary. So I want to modify class DStream's method saveAsObjectFiles and saveAsTextFiles , it creates directory and files just when the RDD's partitions size > 0 .



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