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Posted to common-issues@hadoop.apache.org by "Tsz Wo (Nicholas), SZE (Commented) (JIRA)" <ji...@apache.org> on 2012/04/02 22:25:24 UTC

[jira] [Commented] (HADOOP-8240) Allow users to specify a checksum type on create()

    [ https://issues.apache.org/jira/browse/HADOOP-8240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13244552#comment-13244552 ] 

Tsz Wo (Nicholas), SZE commented on HADOOP-8240:
------------------------------------------------

It may not be a good idea to add CRC type to CreateFlag.  They look different concepts to me.
                
> Allow users to specify a checksum type on create()
> --------------------------------------------------
>
>                 Key: HADOOP-8240
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8240
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 0.23.0
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>             Fix For: 0.23.3, 2.0.0, 3.0.0
>
>         Attachments: hadoop-8240.patch
>
>
> Per discussion in HADOOP-8060, a way for users to specify a checksum type on create() is needed. The way FileSystem cache works makes it impossible to use dfs.checksum.type to achieve this. Also checksum-related API is at Filesystem-level, so we prefer something at that level, not hdfs-specific one.  Current proposal is to use CreatFlag.

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