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From "Xiaobing Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10577) Support building imbalanced MiniDFSCluster from JSON
Date Fri, 24 Jun 2016 21:33:16 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10577?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Xiaobing Zhou updated HDFS-10577:
    Issue Type: Sub-task  (was: Improvement)
        Parent: HDFS-10576

> Support building imbalanced MiniDFSCluster from JSON
> ----------------------------------------------------
>                 Key: HDFS-10577
>                 URL: https://issues.apache.org/jira/browse/HDFS-10577
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>            Reporter: Xiaobing Zhou
>            Assignee: Xiaobing Zhou
>             Fix For: 3.0.0-alpha1
> To build an imbalanced MiniDFSCluster, there are much work to do (e.g. TestDiskBalancer#testDiskBalancerEndToEnd).
It's even more given tens of data nodes are built, on the other hand, Diskbalancer data model
can easily dump and build any kinds of imbalanced cluster (e.g. data-cluster-64node-3disk.json
used by TestDiskBalancerCommand#setUp). This proposes to support building imbalanced MiniDFSCluster
from dumped JSON file to make writing tests easy.

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