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From "Michael Allen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1216) reconsider using SequenceFiles for the WAL
Date Mon, 08 Apr 2013 20:23:15 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13625763#comment-13625763
] 

Michael Allen commented on ACCUMULO-1216:
-----------------------------------------

Yeah, I still think putting encryption into the codec interface is shoehorning a square peg
into a round hole.  See ACCUMULO-958 (https://issues.apache.org/jira/secure/attachment/12577602/Improving-Crypto-Module-Interface-v1.2.pdf)
for my short PDF about why that is.  
                
> reconsider using SequenceFiles for the WAL
> ------------------------------------------
>
>                 Key: ACCUMULO-1216
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1216
>             Project: Accumulo
>          Issue Type: Task
>          Components: tserver
>    Affects Versions: 1.5.0
>            Reporter: Eric Newton
>            Priority: Minor
>
> Observing the code in HBase we learned that WAL files written/flushed to HDFS would *not*
present the correct file size, which made using SequenceFile for WALs problematic.  So we
just write Writables.  In a sequence.
> However, it would be nice to go back and use SequenceFile.
> It might be possible since learning how to properly close a file.

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