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https://issues.apache.org/jira/browse/FLINK-25672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17679870#comment-17679870
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Martijn Visser commented on FLINK-25672:
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[~cre...@gmail.com] Unfortunately not, still looking for volunteers
> FileSource enumerator remembers paths of all already processed files which
> can result in large state
> ----------------------------------------------------------------------------------------------------
>
> Key: FLINK-25672
> URL: https://issues.apache.org/jira/browse/FLINK-25672
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / FileSystem
> Reporter: Martijn Visser
> Priority: Major
>
> As mentioned in the Filesystem documentation, for Unbounded File Sources, the
> {{FileEnumerator}} currently remembers paths of all already processed files,
> which is a state that can in come cases grow rather large.
> We should look into possibilities to reduce this. We could look into adding a
> compressed form of tracking already processed files (for example by keeping
> modification timestamps lower boundaries).
> When fixed, this should also be reflected in the documentation, as mentioned
> in https://github.com/apache/flink/pull/18288#discussion_r785707311
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