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From "Chen Liang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11775) Ozone: KSM : add createBucket
Date Wed, 17 May 2017 17:30:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16014457#comment-16014457
] 

Chen Liang commented on HDFS-11775:
-----------------------------------

Thanks [~anu] for [the reply|https://issues.apache.org/jira/browse/HDFS-11775?focusedCommentId=16013502&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16013502]!


But I doubt whether this is enough, even though the name of volumes, buckets and keys are
well formatted like you mentioned, in HDFS-11769 we introduced a fourth type of entry in ksm.db,
which is userName -> volumeList pairs. Differing from volume, bucket and key names, userName
does not have slash as delimiter. For now, this is fine, but if we are to add more types of
information like this, we might still get collision (Also, it seems existing test cases do
not have slash for volume names either)

> Ozone: KSM : add createBucket 
> ------------------------------
>
>                 Key: HDFS-11775
>                 URL: https://issues.apache.org/jira/browse/HDFS-11775
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Anu Engineer
>            Assignee: Nandakumar
>         Attachments: HDFS-11775-HDFS-7240.000.patch, HDFS-11775-HDFS-7240.001.patch,
HDFS-11775-HDFS-7240.002.patch, HDFS-11775-HDFS-7240.003.patch, HDFS-11775-HDFS-7240.004.patch,
HDFS-11775-HDFS-7240.005.patch
>
>
> Creates a bucket if it does not exist. A precondition to creating a bucket is that a
parent volume must exist.



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