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Posted to issues@flink.apache.org by "zhijiang (JIRA)" <ji...@apache.org> on 2018/04/09 06:29:00 UTC
[jira] [Updated] (FLINK-8523) Stop assigning floating buffers for
blocked input channels in exactly-once mode
[ https://issues.apache.org/jira/browse/FLINK-8523?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
zhijiang updated FLINK-8523:
----------------------------
Affects Version/s: 1.6.0
> Stop assigning floating buffers for blocked input channels in exactly-once mode
> -------------------------------------------------------------------------------
>
> Key: FLINK-8523
> URL: https://issues.apache.org/jira/browse/FLINK-8523
> Project: Flink
> Issue Type: Sub-task
> Components: Network
> Affects Versions: 1.5.0, 1.6.0
> Reporter: zhijiang
> Assignee: zhijiang
> Priority: Major
>
> In exactly-once mode, the input channel is set blocked state when reading barrier from it. And the blocked state will be released after barrier alignment or cancelled.
>
> In credit-based network flow control, we should avoid assigning floating buffers for blocked input channels because the buffers after barrier will not be processed by operator until alignment.
> To do so, we can fully make use of floating buffers and speed up barrier alignment in some extent.
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