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https://issues.apache.org/jira/browse/SPARK-18974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15772329#comment-15772329
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Adam Wang commented on SPARK-18974:
-----------------------------------
Same problem :
http://stackoverflow.com/questions/33384299/spark-streaming-does-not-read-files-moved-from-hdfs-to-hdfs
> FileInputDStream could not detected files which moved to the directory
> -----------------------------------------------------------------------
>
> Key: SPARK-18974
> URL: https://issues.apache.org/jira/browse/SPARK-18974
> Project: Spark
> Issue Type: Bug
> Components: DStreams, Input/Output
> Affects Versions: 1.6.3, 2.0.2
> Reporter: Adam Wang
>
> FileInputDStream use mod time to find new files, but if a file was moved into
> the directories it's modification time would not be changed, so
> FileInputDStream could not detect these files.
> I think a way to fix this bug is get access_time and do judgment, bug it need
> a Set of files to save all old files, it would very inefficient for lot of
> files directory.
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