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From "Thomas Demoor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11026) Convert BlockTokenIdentifier to use Protobuf
Date Thu, 03 Nov 2016 14:39:59 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15632918#comment-15632918
] 

Thomas Demoor commented on HDFS-11026:
--------------------------------------

Ewan's stacktraces match with [~andrew.wang]'s remarks.
[~daryn], once HDFS-11096 gets resolved we expect the current patch to work across 2.x and
3.0.

Thanks for looking at our patch.

> Convert BlockTokenIdentifier to use Protobuf
> --------------------------------------------
>
>                 Key: HDFS-11026
>                 URL: https://issues.apache.org/jira/browse/HDFS-11026
>             Project: Hadoop HDFS
>          Issue Type: Task
>          Components: hdfs, hdfs-client
>    Affects Versions: 2.9.0, 3.0.0-alpha1
>            Reporter: Ewan Higgs
>             Fix For: 3.0.0-alpha2
>
>         Attachments: HDFS-11026.002.patch, blocktokenidentifier-protobuf.patch
>
>
> {{BlockTokenIdentifier}} currently uses a {{DataInput}}/{{DataOutput}} (basically a {{byte[]}})
and manual serialization to get data into and out of the encrypted buffer (in {{BlockKeyProto}}).
Other TokenIdentifiers (e.g. {{ContainerTokenIdentifier}}, {{AMRMTokenIdentifier}}) use Protobuf.
The {{BlockTokenIdenfitier}} should use Protobuf as well so it can be expanded more easily
and will be consistent with the rest of the system.
> NB: Release of this will require a version update since 2.8.x won't be able to decipher
{{BlockKeyProto.keyBytes}} from 2.8.y.



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