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https://issues.apache.org/jira/browse/TEZ-1243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14046185#comment-14046185
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Hitesh Shah commented on TEZ-1243:
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Probably better to create a separate jira to write javadoc file just to explain
events in general. Could be done as part of this jira too depending on who
volunteers to work on this.
> VertexManagerEvent documentation and use of payload needs fixing
> ----------------------------------------------------------------
>
> Key: TEZ-1243
> URL: https://issues.apache.org/jira/browse/TEZ-1243
> Project: Apache Tez
> Issue Type: Sub-task
> Reporter: Hitesh Shah
>
> VertexManagerEvent is a public user-visible event. There is no documentation
> on who can generate it. It mentions Task but can any Input/Output generate
> this information?
> There is no information on the payload structure. Inputs/Outputs that written
> and available in the runtime library may be completely unrelated to the
> configured vertex manager of a given vertex.
> Also, it uses TezUserPayload which is meant to be internal implementation
> only as compared to byte[].
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