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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-12437) HLogFactory should be able to accept multiple custom WALReaders in case of failure to read WAL logs due to upgrade/migrate of hbase
Date Mon, 05 Jan 2015 02:51:35 GMT

     [ https://issues.apache.org/jira/browse/HBASE-12437?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell updated HBASE-12437:
-----------------------------------
    Fix Version/s:     (was: 1.1.0)
                       (was: 0.98.10)

> HLogFactory should be able to accept multiple custom WALReaders in case of failure to
read WAL logs due to upgrade/migrate of hbase
> -----------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-12437
>                 URL: https://issues.apache.org/jira/browse/HBASE-12437
>             Project: HBase
>          Issue Type: Bug
>          Components: wal
>    Affects Versions: 0.96.0, 0.98.4
>            Reporter: Enoch Hsu
>         Attachments: HBASE_12437.patch
>
>
> The HLogFactory createReader function allows the user to create their own reader and
just assumes that the reader will work correctly. 
> The default implementation checks between Protobuf and sequencefiles. However, the custom
reader option does not account for any differences in the files. 
> There should be an option or configuration to specify multiple custom readers in the
case that an old custom reader was used for sequence files and and a custom reader is being
used for protobuf instead of throwing an IPBRE
> The current HLogFactory does not allow me to fall back and handle upgraded file systems
similar to the default case.



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