[jira] [Assigned] (FLINK-29916) Levels in Table Store may mistakenly ignore level 0 files when two files have the same sequence number

["Caizhi Weng (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-29916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Caizhi Weng reassigned FLINK-29916:
-----------------------------------

    Assignee: Caizhi Weng

> Levels in Table Store may mistakenly ignore level 0 files when two files have the same sequence number
> ------------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-29916
>                 URL: https://issues.apache.org/jira/browse/FLINK-29916
>             Project: Flink
>          Issue Type: Bug
>          Components: Table Store
>    Affects Versions: table-store-0.3.0, table-store-0.2.2
>            Reporter: Caizhi Weng
>            Assignee: Caizhi Weng
>            Priority: Major
>             Fix For: table-store-0.3.0, table-store-0.2.2
>
>
> Current constructor of {{Levels}} class contains the following code:
> {code:java}
> this.level0 = new TreeSet<>(Comparator.comparing(DataFileMeta::maxSequenceNumber).reversed());
> {code}
> However when two or more jobs writing the same bucket, they may produce files containing the same sequence number. If two files have the same {{maxSequenceNumber}}, one of them will be mistakenly ignored by {{TreeSet}}.



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