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Date: Thu, 16 Mar 2017 18:15:42 +0000 (UTC)
From: "Junping Du (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12707059.1396913151000.40689.1489688142309@Atlassian.JIRA>
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References: <JIRA.12707059.1396913151000@Atlassian.JIRA> <JIRA.12707059.1396913151037@jira-lw-us.apache.org>
Subject: [jira] [Commented] (HDFS-6200) Create a separate jar for
 hdfs-client
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archived-at: Thu, 16 Mar 2017 18:15:47 -0000


    [ https://issues.apache.org/jira/browse/HDFS-6200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15928568#comment-15928568 ] 

Junping Du commented on HDFS-6200:
----------------------------------

Due to HDFS-11431, I just updated release note here with adding "Please note that hadoop-hdfs-client module could miss class like ConfiguredFailoverProxyProvider. So if a cluster is in HA deployment, we should still use hadoop-hdfs instead." 
HDFS folks, please check if this is proper notes. Thanks!

> Create a separate jar for hdfs-client
> -------------------------------------
>
>                 Key: HDFS-6200
>                 URL: https://issues.apache.org/jira/browse/HDFS-6200
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: build
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>             Fix For: 2.8.0, 3.0.0-alpha1
>
>         Attachments: HDFS-6200.000.patch, HDFS-6200.001.patch, HDFS-6200.002.patch, HDFS-6200.003.patch, HDFS-6200.004.patch, HDFS-6200.005.patch, HDFS-6200.006.patch, HDFS-6200.007.patch
>
>
> Currently the hadoop-hdfs jar contain both the hdfs server and the hdfs client. As discussed in the hdfs-dev mailing list (http://mail-archives.apache.org/mod_mbox/hadoop-hdfs-dev/201404.mbox/browser), downstream projects are forced to bring in additional dependency in order to access hdfs. The additional dependency sometimes can be difficult to manage for projects like Apache Falcon and Apache Oozie.
> This jira proposes to create a new project, hadoop-hdfs-cliient, which contains the client side of the hdfs code. Downstream projects can use this jar instead of the hadoop-hdfs to avoid unnecessary dependency.
> Note that it does not break the compatibility of downstream projects. This is because old downstream projects implicitly depend on hadoop-hdfs-client through the hadoop-hdfs jar.


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