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https://issues.apache.org/jira/browse/TEZ-1172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14028722#comment-14028722
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Bikas Saha commented on TEZ-1172:
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bq.No, they shouldn't. There don't seem to be any use cases for this at the
moment though, and wasn't the original intent of this jira. Should be fairly
simple to support.
Right, so we should not restrict that in this jira. If today someone writes
their own input that does not need an initializer, it should just work when
specified with multiple inputs without needing a custom vertex manager. So we
should really be checking for multiple input initializers and not multiple
inputs.
bq.-1 is not a requirement for multiple
Makes sense. I confused this with the RootInputSpec fix that had that
requirement.
> Allow multiple Root Input initializers to be specified per Vertex
> -----------------------------------------------------------------
>
> Key: TEZ-1172
> URL: https://issues.apache.org/jira/browse/TEZ-1172
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Siddharth Seth
> Assignee: Siddharth Seth
> Attachments: TEZ-1172.1.txt, TEZ-1172.2.txt
>
>
> The default VertexManager in Tez for this handles only 1 RootInput - since it
> doesn't know how to combine multiple different Inputs. However, if a custom
> vertex manager plugin is specified by users - it should be possible to
> specify multiple RootInputs.
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