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Posted to issues@flink.apache.org by "Gary Yao (Jira)" <ji...@apache.org> on 2019/12/10 11:14:00 UTC
[jira] [Commented] (FLINK-15169) Errors happen in the scheduling of
DefaultScheduler is not shown in WebUI
[ https://issues.apache.org/jira/browse/FLINK-15169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16992449#comment-16992449 ]
Gary Yao commented on FLINK-15169:
----------------------------------
How come task failures are not visible? We initialize the failure cause in Execution#processFail
> Errors happen in the scheduling of DefaultScheduler is not shown in WebUI
> -------------------------------------------------------------------------
>
> Key: FLINK-15169
> URL: https://issues.apache.org/jira/browse/FLINK-15169
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination
> Affects Versions: 1.10.0
> Reporter: Zhu Zhu
> Priority: Blocker
> Fix For: 1.10.0
>
>
> WebUI relies on {{ExecutionGraph#failureInfo}} and {{Execution#failureCause}} to generate error info (via {{JobExceptionsHandler#createJobExceptionsInfo}}).
> Errors happen in the scheduling of DefaultScheduler are not recorded into those fields, thus cannot be shown to users in WebUI (nor via REST queries).
> To solve it,
> 1. global failures should be recorded into {{ExecutionGraph#failureInfo}}, via {{ExecutionGraph#initFailureCause}} which can be exposed as {{SchedulerBase#initFailureCause}}.
> 2. for task failures, one solution I can think of is to avoid invoking {{DefaultScheduler#handleTaskFailure}} directly on scheduler's internal failures. Instead, we can introduce {{ExecutionVertexOperations#fail(ExecutionVertex)}} to hand the error to {{ExecutionVertex}} as a common failure.
> cc [~gjy]
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