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https://issues.apache.org/jira/browse/FLINK-5645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15897135#comment-15897135
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ASF GitHub Bot commented on FLINK-5645:
---------------------------------------
Github user uce commented on a diff in the pull request:
https://github.com/apache/flink/pull/3377#discussion_r104394092
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ExecutionGraph.java
---
@@ -1311,6 +1311,19 @@ public boolean updateState(TaskExecutionState state)
{
}
}
+ private Map<String, Accumulator<?, ?>>
deserializeAccumulators(TaskExecutionState state) {
--- End diff --
I've checked that returning `null` is the same behaviour as in
`accumulators.deserializeUserAccumulators(userClassLoader)`. In general it
would be good to add annotations for `@Nullable` return types or simply return
empty collections, but that's an orthogonal change.
> IOMetrics transfer through ExecGraph does not work for failed jobs
> ------------------------------------------------------------------
>
> Key: FLINK-5645
> URL: https://issues.apache.org/jira/browse/FLINK-5645
> Project: Flink
> Issue Type: Bug
> Components: Metrics, Webfrontend
> Affects Versions: 1.2.0, 1.3.0
> Reporter: Chesnay Schepler
> Assignee: Chesnay Schepler
> Priority: Blocker
>
> While a job is running the web-interface polls IO metrics using the
> MetricFetcher/MetricQueryService. For finished jobs these metrics are stored
> in the ExecutionGraph; each vertex has an IOMetrics object; basically a
> snapshot taken when the task was finished.
> For completed jobs this mechanism is working. However, for failed jobs it
> doesn't; in this case last fetched metrics are displayed.
> This isn't intended behavior and should be fixed.
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