[jira] [Updated] (RATIS-2134) `logMetadata` could miss appending the `metadataEntry` with the

["Chung En Lee (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/RATIS-2134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chung En Lee updated RATIS-2134:
--------------------------------
    Summary: `logMetadata` could miss appending the `metadataEntry` with the   (was: `logMetadata` could miss appending `commitIndex` in the `metadataEntry`)

> `logMetadata` could miss appending the `metadataEntry` with the 
> ----------------------------------------------------------------
>
>                 Key: RATIS-2134
>                 URL: https://issues.apache.org/jira/browse/RATIS-2134
>             Project: Ratis
>          Issue Type: Bug
>            Reporter: Chung En Lee
>            Assignee: Chung En Lee
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Now, RaftLog appends a metadata entry with the lastCommitIndex and checks whether the entry at the lastCommitIndex is neither a metadata entry nor an entry with a smaller commit index.
> However, RaftLog doesn't always log metadata entries in order. Sometimes, it misses some commit indexes. For example:
> STATEMACHINELOGENTRY(1, 1)
> STATEMACHINELOGENTRY(1, 2)
> METADATAENTRY(commitIndex: 1)
> If a {{METADATAENTRY}} is missed and the lastCommitIndex is a metadata entry, RaftLog won't append it.



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