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https://issues.apache.org/jira/browse/FLINK-2706?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aljoscha Krettek closed FLINK-2706.
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Resolution: Won't Fix
This has been superseded by the work to make the {{BucketingSink}} our
{{FileSystem}} abstraction: FLINK-5789
> Add support for streaming RollingFileSink to truncate / append on UNIX file
> systems
> -----------------------------------------------------------------------------------
>
> Key: FLINK-2706
> URL: https://issues.apache.org/jira/browse/FLINK-2706
> Project: Flink
> Issue Type: Improvement
> Components: filesystem-connector, Streaming Connectors
> Affects Versions: 0.10.0
> Reporter: Stephan Ewen
> Assignee: Aljoscha Krettek
>
> Efficient exactly-once behavior needs the filesystem to support appending and
> truncating files.
> Since the UNIX file system API allows to append files and truncate files, we
> can support perfect exactly-once behavior efficiently on all file systems
> that expose a UNIX / POSIX-style interface (local FS, NFS, MapR FS).
> Without this support, only Hadoop 2.7+ versions support proper exactly once
> behavior.
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