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https://issues.apache.org/jira/browse/SPARK-6061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14346640#comment-14346640
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maji2014 commented on SPARK-6061:
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Different rules exist between 1.1.0 and 1.2.1.
In current situation, the modTimeIgnoreThreshold is the max of
"initialModTimeIgnoreThreshold" and "currentTime -
durationToRemember.milliseconds", and the value of "currentTime -
durationToRemember.milliseconds" is the ignore threshold if the propertis
"newFilesOnly" is set to false. the default value of MIN_REMEMBER_DURATION is 1
minute
> File source dstream can not include the old file which timestamp is before
> the system time
> ------------------------------------------------------------------------------------------
>
> Key: SPARK-6061
> URL: https://issues.apache.org/jira/browse/SPARK-6061
> Project: Spark
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 1.2.1
> Reporter: Jack Hu
> Labels: FileSourceDStream, OlderFiles, Streaming
> Original Estimate: 1m
> Remaining Estimate: 1m
>
> The file source dstream (StreamContext.fileStream) has a properties named
> "newFilesOnly" to include the old files, it worked fine with 1.1.0, and
> broken at 1.2.1, the older files always be ignored no mattern what value is
> set.
> Here is the simple reproduce code:
> https://gist.github.com/jhu-chang/1ee5b0788c7479414eeb
> The reason is that: the "modTimeIgnoreThreshold" in
> FileInputDStream::findNewFiles is set to a time closed to system time (Spark
> Streaming Clock time), so the files old than this time are ignored.
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