[jira] [Commented] (FLINK-10168) support filtering files by modified/created time in StreamExecutionEnvironment.readFile()

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

    [ https://issues.apache.org/jira/browse/FLINK-10168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16635923#comment-16635923 ] 

Bowen Li commented on FLINK-10168:
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[~kkl0u] what do you think about this task? 

I believe this is very important, this provides users with similar functions in streaming (kinesis, kafka) where users can read data from a certain point of time. 

> 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: Jiayi Liao
>            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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