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https://issues.apache.org/jira/browse/FLINK-6042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17270110#comment-17270110
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Till Rohrmann commented on FLINK-6042:
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Another thing to keep in mind is that local failovers (failovers which don't
change the topology) don't necessarily trigger the generation of a new
{{ExecutionGraph}}. Hence, there might be multiple failure causes logically
attached to a single {{ExecutionGraph}}.
> Display last n exceptions/causes for job restarts in Web UI
> -----------------------------------------------------------
>
> Key: FLINK-6042
> URL: https://issues.apache.org/jira/browse/FLINK-6042
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Coordination, Runtime / Web Frontend
> Affects Versions: 1.3.0
> Reporter: Till Rohrmann
> Assignee: Matthias
> Priority: Major
> Labels: pull-request-available
>
> Users requested that it would be nice to see the last {{n}} exceptions
> causing a job restart in the Web UI. This will help to more easily debug and
> operate a job.
> We could store the root causes for failures similar to how prior executions
> are stored in the {{ExecutionVertex}} using the {{EvictingBoundedList}} and
> then serve this information via the Web UI.
> _-- Update: January 21, 2021 --_
> The UI can already handle multiple exceptions through the Exception History.
> Right now, we list one or more exceptions which caused the job to fail.
> Instead, we could adapt it in a way that the history contains not only the
> exceptions of the most recent failure but one expandable entry per restart.
> If there are more than one exception connected to a single restart, we would
> list their stacktraces within one expandable entry.
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