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https://issues.apache.org/jira/browse/TEZ-1172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14029604#comment-14029604
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Bikas Saha commented on TEZ-1172:
---------------------------------
Would be useful to have the vertex name etc in the RootInputVertexManager
exception.
configuredInputName is not set if it was null. so in the distributor case,
where numTasks>1 without a configure event, multiple distributors may end up
not failing this check because configuredInputName remains null?
{code}+ Preconditions.checkState(
+ configuredInputName == null ||
configuredInputName.equals(inputName),
+ "RootInputVertexManager cannot configure multiple inputs. Use a
custom VertexManager");{code}
Rests looks good. +1.
> 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, TEZ-1172.3.txt,
> TEZ-1172.4.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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