[jira] [Updated] (HBASE-20952) Re-visit the WAL API

["Sean Busbey (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-20952?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Busbey updated HBASE-20952:
--------------------------------
    Component/s: wal

> Re-visit the WAL API
> --------------------
>
>                 Key: HBASE-20952
>                 URL: https://issues.apache.org/jira/browse/HBASE-20952
>             Project: HBase
>          Issue Type: Sub-task
>          Components: wal
>            Reporter: Josh Elser
>            Priority: Major
>
> Take a step back from the current WAL implementations and think about what an HBase WAL API should look like. What are the primitive calls that we require to guarantee durability of writes with a high degree of performance?
> The API needs to take the current implementations into consideration. We should also have a mind for what is happening in the Ratis LogService (but the LogService should not dictate what HBase's WAL API looks like RATIS-272).
> The API may be "OK" (or OK in a part). We need to also consider other methods which were "bolted" on such as {{AbstractFSWAL}} and {{WALFileLengthProvider}}. Other corners of "WAL use" (like the {{WALSplitter}} should also be looked at to use WAL-APIs only).
> We also need to make sure that adequate interface audience and stability annotations are chosen.



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