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https://issues.apache.org/jira/browse/TEZ-3630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15878249#comment-15878249
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Sreenath Somarajapuram commented on TEZ-3630:
---------------------------------------------
ERROR status was already added as part of TEZ-3629. Its used there to
differentiate between running & completed DAG.
> Tez UI: Use DAG status for controlling auto-refresh polling.
> ------------------------------------------------------------
>
> Key: TEZ-3630
> URL: https://issues.apache.org/jira/browse/TEZ-3630
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Sreenath Somarajapuram
> Assignee: Sreenath Somarajapuram
> Attachments: TEZ-3630.1.patch
>
>
> Issue: UI throws error on trying to access details of a SUCCEEDED DAG in a
> RUNNING app.
> Cause: Right now we depend on app status to control polling, and its not
> mandatory for the AM to have details about non-running DAGs run under it.
> Hence error is thrown on polling AM for old DAG details.
> Note:
> - Current implementation uses app status as it considers a possible case
> where DAG could move to SUCCEEDED state and then go back to RUNNING.
> - It also presumed the AM to have data about all DAGs run under it.
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