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https://issues.apache.org/jira/browse/TEZ-625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14625370#comment-14625370
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Hitesh Shah commented on TEZ-625:
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For the most part, we have been treating the dagName both as a display name as
well as a reference to access a given dag within a session. Dag name is also
not guaranteed to be unique across all jobs today as Tez cant really enforce
that.
We do have the dagId ( similar to the MR job id ) which is internally generated
and unique across the cluster ( TezDAGId class ). It is used in all internal
references, logging, directory structures, etc. It is currently not exposed
back to the user and could potentially become the publicly visibly entity for
id-related linking semantics. \cc [~sseth] I believe you were planning to file
a jira for this or does one already exist?
> DAG/Vertex names should be restricted to using [A-Za-z0-9 -_:] and limited to
> a defined character limit
> -------------------------------------------------------------------------------------------------------
>
> Key: TEZ-625
> URL: https://issues.apache.org/jira/browse/TEZ-625
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Hitesh Shah
> Assignee: Saikat
> Labels: newbie
> Attachments: TEZ-625.1.patch, TEZ-625.2.patch, TEZ-625.3.patch,
> TEZ-625.4.patch, TEZ-625.patch
>
>
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