[jira] [Updated] (FLINK-20103) Improve test coverage for network stack

["Roman Khachatryan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-20103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Roman Khachatryan updated FLINK-20103:
--------------------------------------
    Description: 
This is a follow-up ticket after FLINK-20097.

The current setup (UnalignedITCase) doesn't reveal:
- race conditions (1 per tens of runs)
- or bugs triggered in some specific setup (low checkpoint timeout)

Changes that might hide the bugs:
- having Preconditions in ChannelStatePersister (slow down processing)
- some Preconditions may mask errors by causing job restart
- timings in tests (UnalignedITCase)


  was:
This is a follow-up ticket after FLINK-20097.

The current setup (UnalignedITCase) doesn't reveal:

- race conditions (1 per tens of runs)

- or bugs triggered in some specific setup (low checkpoint timeout)


> Improve test coverage for network stack
> ---------------------------------------
>
>                 Key: FLINK-20103
>                 URL: https://issues.apache.org/jira/browse/FLINK-20103
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Checkpointing, Runtime / Network, Tests
>            Reporter: Roman Khachatryan
>            Priority: Major
>             Fix For: 1.13.0
>
>
> This is a follow-up ticket after FLINK-20097.
> The current setup (UnalignedITCase) doesn't reveal:
> - race conditions (1 per tens of runs)
> - or bugs triggered in some specific setup (low checkpoint timeout)
> Changes that might hide the bugs:
> - having Preconditions in ChannelStatePersister (slow down processing)
> - some Preconditions may mask errors by causing job restart
> - timings in tests (UnalignedITCase)



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