[jira] [Updated] (HUDI-5433) Fix the way we deduce the pending instants for MDT writes

["sivabalan narayanan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HUDI-5433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

sivabalan narayanan updated HUDI-5433:
--------------------------------------
    Reviewers: Raymond Xu

> Fix the way we deduce the pending instants for MDT writes
> ---------------------------------------------------------
>
>                 Key: HUDI-5433
>                 URL: https://issues.apache.org/jira/browse/HUDI-5433
>             Project: Apache Hudi
>          Issue Type: Bug
>          Components: metadata
>            Reporter: sivabalan narayanan
>            Assignee: sivabalan narayanan
>            Priority: Blocker
>              Labels: pull-request-available
>             Fix For: 0.13.0
>
>
> we trigger compaction in MDT, only when there are no pending inflights apart from the one thats currently updating the MDT. So we use below code snippet for it. 
>  
> {code:java}
>  List<HoodieInstant> pendingInstants = dataMetaClient.reloadActiveTimeline().filterInflightsAndRequested()
>         .findInstantsBefore(instantTime).getInstants(); {code}
> As you could see, we use "findInstantsBefore" which could not yield right results at all times.
>  
> So, we need to find all inflight instants and see if there are any except the current commit thats updating the MDT. If there are any, we should defer compaction.
> Impact:
> writes to MDT might fail if there was any missed inflight and later it was rolledback. Users have to disable MDT and make progress.



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