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https://issues.apache.org/jira/browse/FLINK-10168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16649863#comment-16649863
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Fabian Hueske commented on FLINK-10168:
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I like the idea of extending filters for FileInputFormat.
The FileInputFormat has already some filters based on the file name. If we
extend the logic, the existing code an API needs to be taken into account.
Not sure if I'd change the API of StreamExecutionEnvironment. I think we should
limit the changes to FileInputFormat.
> support filtering files by modified/created time in
> StreamExecutionEnvironment.readFile()
> -----------------------------------------------------------------------------------------
>
> Key: FLINK-10168
> URL: https://issues.apache.org/jira/browse/FLINK-10168
> Project: Flink
> Issue Type: Improvement
> Components: DataStream API
> Affects Versions: 1.6.0
> Reporter: Bowen Li
> Assignee: Bowen Li
> Priority: Major
> Fix For: 1.7.0
>
>
> support filtering files by modified/created time in
> {{StreamExecutionEnvironment.readFile()}}
> for example, in a source dir with lots of file, we only want to read files
> that is created or modified after a specific time.
> This API can expose a generic filter function of files, and let users define
> filtering rules. Currently Flink only supports filtering files by path. What
> this means is that, currently the API is
> {{FileInputFormat.setFilesFilters(PathFiter)}} that takes only one file path
> filter. A more generic API that can take more filters can look like this 1)
> {{FileInputFormat.setFilesFilters(List (PathFiter, ModifiedTileFilter, ...
> ))}}
> 2) or {{FileInputFormat.setFilesFilters(FileFiter),}} and {{FileFilter}}
> exposes all file attributes that Flink's file system can provide, like path
> and modified time
> I lean towards the 2nd option, because it gives users more flexibility to
> define complex filtering rules based on combinations of file attributes.
>
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