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https://issues.apache.org/jira/browse/TEZ-2221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14527692#comment-14527692
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Hitesh Shah commented on TEZ-2221:
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I guess the question boils down to what the behavior should be. When a vertex
group is committed, each vertex in it is committed. If the vertex also belongs
to another group, what happens? Should a vertex be allowed to belong to 2
vertex groups? If yes, how should its commit be handled? The above check were
to ensure some bits of verification for this case but probably need to be
enhanced for more stringent checks.
> VertexGroup name should be unqiue
> ---------------------------------
>
> Key: TEZ-2221
> URL: https://issues.apache.org/jira/browse/TEZ-2221
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Jeff Zhang
> Assignee: Jeff Zhang
> Fix For: 0.7.0, 0.5.4, 0.6.1
>
> Attachments: TEZ-2221-1.patch, TEZ-2221-2.patch, TEZ-2221-3.patch,
> TEZ-2221-4.patch
>
>
> VertexGroupCommitStartedEvent & VertexGroupCommitFinishedEvent use vertex
> group name to identify the vertex group commit, the same name of vertex group
> will conflict. While in the current equals & hashCode of VertexGroup, vertex
> group name and members name are used.
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