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https://issues.apache.org/jira/browse/FLINK-29132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17601811#comment-17601811
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Yun Gao commented on FLINK-29132:
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Merged on master via 26eeabfdd1f5f976ed1b5d761a3469bbcb7d3223
Merged on 1.16 via 4dad2e29a090c731a0474a80e320264040c348ce
> SubtaskMetricStore causes memory leak.
> --------------------------------------
>
> Key: FLINK-29132
> URL: https://issues.apache.org/jira/browse/FLINK-29132
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Metrics
> Affects Versions: 1.16.0
> Reporter: Sitan Pang
> Assignee: Gen Luo
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.16.0
>
> Attachments: dump-attempts.png, dump-metricStore.png,
> image-2022-08-30-11-56-34-608.png, image-2022-08-30-11-57-59-325.png
>
>
> In [FLINK-28588], MetricStore supports multiple attempts of a subtask.
> However, `SubtaskMetricStore` doesn't have a clean mechanism. In failover
> scenario, `attempts` pile up and cause OOM.
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