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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11956) Fix BlockToken compatibility with Hadoop 2.x clients
Date Thu, 15 Jun 2017 21:24:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16051084#comment-16051084
] 

Andrew Wang commented on HDFS-11956:
------------------------------------

LGTM, though we should also add an entry to hdfs-default.xml as documentation for this new
option, and some of the checkstyles look fixable. Would appreciate if you could validate that
the failed unit tests are unrelated (sadly, there are a lot).

[~chris.douglas] do you want to review as well?

> Fix BlockToken compatibility with Hadoop 2.x clients
> ----------------------------------------------------
>
>                 Key: HDFS-11956
>                 URL: https://issues.apache.org/jira/browse/HDFS-11956
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 3.0.0-alpha4
>            Reporter: Andrew Wang
>            Assignee: Ewan Higgs
>            Priority: Blocker
>         Attachments: HDFS-11956.001.patch, HDFS-11956.002.patch
>
>
> Seems like HDFS-9807 broke backwards compatibility with Hadoop 2.x clients. When talking
to a 3.0.0-alpha4 DN with security on:
> {noformat}
> 2017-06-06 23:27:22,568 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Block token
verification failed: op=WRITE_BLOCK, remoteAddress=/172.28.208.200:53900, message=Block token
with StorageIDs [DS-c0f24154-a39b-4941-93cd-5b8323067ba2] not valid for access with StorageIDs
[]
> {noformat}



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