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

[Caizhi Weng (Jira)]

Caizhi Weng created FLINK-29916:
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             Summary: 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
             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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