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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11156) Webhdfs rest api GET_BLOCK_LOCATIONS output doesn't comply with FileSystem API
Date Thu, 01 Dec 2016 04:47:59 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11156?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Weiwei Yang updated HDFS-11156:
-------------------------------
    Attachment: HDFS-11156.05.patch

> Webhdfs rest api GET_BLOCK_LOCATIONS output doesn't comply with FileSystem API
> ------------------------------------------------------------------------------
>
>                 Key: HDFS-11156
>                 URL: https://issues.apache.org/jira/browse/HDFS-11156
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 2.7.3
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>         Attachments: HDFS-11156.01.patch, HDFS-11156.02.patch, HDFS-11156.03.patch, HDFS-11156.04.patch,
HDFS-11156.05.patch
>
>
> Following webhdfs REST API
> {code}
> http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=GET_BLOCK_LOCATIONS&offset=0&length=1
> {code}
> will get a response like
> {code}
> {
>   "LocatedBlocks" : {
>     "fileLength" : 1073741824,
>     "isLastBlockComplete" : true,
>     "isUnderConstruction" : false,
>     "lastLocatedBlock" : { ... },
>     "locatedBlocks" : [ {...} ]
>   }
> }
> {code}
> This represents for *o.a.h.h.p.LocatedBlocks*. However according to *FileSystem* API,

> {code}
> public BlockLocation[] getFileBlockLocations(Path p, long start, long len)
> {code}
> clients would expect an array of BlockLocation. This mismatch should be fixed. Marked
as Incompatible change as this will change the output of the GET_BLOCK_LOCATIONS API.



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