[jira] [Assigned] (BEAM-9979) Fix race condition where the read index maybe reported from the last executed bundle

["Luke Cwik (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-9979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Luke Cwik reassigned BEAM-9979:
-------------------------------

    Assignee: Luke Cwik

> Fix race condition where the read index maybe reported from the last executed bundle
> ------------------------------------------------------------------------------------
>
>                 Key: BEAM-9979
>                 URL: https://issues.apache.org/jira/browse/BEAM-9979
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-java-harness
>    Affects Versions: 2.21.0, 2.22.0, 2.23.0
>            Reporter: Luke Cwik
>            Assignee: Luke Cwik
>            Priority: P3
>
> When the BeamFnDataReadRunner is reused there is a short period of time when a progress request could happen before the the start function is called resetting the read index to -1.
> I believe there should be a way to *reset* an operator before it gets added to the set of cached bundle processors separate instead of placing clean-up in any *start* functions that those operators may rely on preventing exposing details of those operators before *start* may have been invoked.



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