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Posted to github@beam.apache.org by GitBox <gi...@apache.org> on 2020/07/10 22:44:25 UTC
[GitHub] [beam] robertwb opened a new pull request #12226: [BEAM-10450] [BEAM-10449] Fix empty flatten bundle processing.
robertwb opened a new pull request #12226:
URL: https://github.com/apache/beam/pull/12226
A pipeline with an empty flatten results in a bundle with no root transforms.
In Java, this caused no transform runners to be instantiated, including the
data output channels which must be executed (as they are
responsible for closing the logical data channels in finish).
This is fixed by unconditionally creating the data ouput transforms. (This is
OK as processing a given transform is idempotent.)
------------------------
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[GitHub] [beam] kennknowles commented on pull request #12226: [BEAM-10450] [BEAM-10449] Fix empty flatten bundle processing.
Posted by GitBox <gi...@apache.org>.
kennknowles commented on pull request #12226:
URL: https://github.com/apache/beam/pull/12226#issuecomment-658375455
The `SparkPortableExecutionTest` failure is tracked at https://issues.apache.org/jira/browse/BEAM-10460. Not yet known whether it is a timeout flake or a failure flake.
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[GitHub] [beam] robertwb commented on pull request #12226: [BEAM-10450] [BEAM-10449] Fix empty flatten bundle processing.
Posted by GitBox <gi...@apache.org>.
robertwb commented on pull request #12226:
URL: https://github.com/apache/beam/pull/12226#issuecomment-656958029
> Alternatively, flattens with no inputs could be roots?
I actually thought about this, but figured this way is more future-proof in case there are any other corner cases like this that come up (especially as the symptoms are non-obvious). This also preserves existing behavior (e.g. start/finishBundle are never invoked for this empty PCollection, though wether that's OK by the model is an ambiguity best left to the list).
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[GitHub] [beam] robertwb commented on pull request #12226: [BEAM-10450] [BEAM-10449] Fix empty flatten bundle processing.
Posted by GitBox <gi...@apache.org>.
robertwb commented on pull request #12226:
URL: https://github.com/apache/beam/pull/12226#issuecomment-656958219
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[GitHub] [beam] robertwb commented on pull request #12226: [BEAM-10450] [BEAM-10449] Fix empty flatten bundle processing.
Posted by GitBox <gi...@apache.org>.
robertwb commented on pull request #12226:
URL: https://github.com/apache/beam/pull/12226#issuecomment-656926826
R: @kennknowles
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[GitHub] [beam] lukecwik merged pull request #12226: [BEAM-10450] [BEAM-10449] Fix empty flatten bundle processing.
Posted by GitBox <gi...@apache.org>.
lukecwik merged pull request #12226:
URL: https://github.com/apache/beam/pull/12226
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[GitHub] [beam] kennknowles commented on pull request #12226: [BEAM-10450] [BEAM-10449] Fix empty flatten bundle processing.
Posted by GitBox <gi...@apache.org>.
kennknowles commented on pull request #12226:
URL: https://github.com/apache/beam/pull/12226#issuecomment-658375602
Please add additional failing runs to the ticket so that we can notice them.
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