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https://issues.apache.org/jira/browse/BEAM-2577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17145410#comment-17145410
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Beam JIRA Bot commented on BEAM-2577:
-------------------------------------
This issue was marked "stale-P2" and has not received a public comment in 14
days. It is now automatically moved to P3. If you are still affected by it, you
can comment and move it back to P2.
> IO tests should exercise Runtime Values where supported
> -------------------------------------------------------
>
> Key: BEAM-2577
> URL: https://issues.apache.org/jira/browse/BEAM-2577
> Project: Beam
> Issue Type: Bug
> Components: io-ideas
> Reporter: Ben Chambers
> Priority: P3
>
> The only tests I have found for `ValueProvider<?>` parameterized methods is
> that they are not evaluated during pipeline construction time. This is
> missing out on several important pieces:
> 1.
> https://stackoverflow.com/questions/44967898/notify-when-textio-is-done-writing-a-file
> seems to be a problem with an AvroIO write using a RuntimeValueProvider
> being non-serializable (current theory is because of an anonymous inner class
> capturing the enclosing AvroIO.Write instance which has non-serializable
> fields).
> 2. Testing that the code paths that actually read the file do so correctly
> when parameterized.
> We should update the developer documentation to describe what the
> requirements are for a parameterized IO and provide guidance on what tests
> are needed and how to write them.
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