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Posted to issues@flink.apache.org by "Piotr Nowojski (Jira)" <ji...@apache.org> on 2020/07/21 07:56:00 UTC
[jira] [Updated] (FLINK-18656) Start Delay metric is always zero
for unaligned checkpoints
[ https://issues.apache.org/jira/browse/FLINK-18656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Piotr Nowojski updated FLINK-18656:
-----------------------------------
Issue Type: Bug (was: Improvement)
> Start Delay metric is always zero for unaligned checkpoints
> -----------------------------------------------------------
>
> Key: FLINK-18656
> URL: https://issues.apache.org/jira/browse/FLINK-18656
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Metrics, Runtime / Network
> Affects Versions: 1.11.1
> Reporter: Piotr Nowojski
> Priority: Major
> Fix For: 1.12.0, 1.11.2
>
> Attachments: Screenshot 2020-07-21 at 09.53.21.png
>
>
> As visible in the attached screenshot, start delay is 0, despite very high end to end time and very quick async/sync times. This is impossible, as "start delay" should be equal to "end_to_end_time - sync_time - async_time".
> The bug is probably in {{CheckpointBarrierUnaligner}} class, which seems to never invoke {{CheckpointBarrierHandler#markCheckpointStart}}.
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