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From "Chen Liang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11923) Stress test of DFSNetworkTopology
Date Fri, 02 Jun 2017 21:29:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Chen Liang updated HDFS-11923:
    Status: Patch Available  (was: Open)

> Stress test of DFSNetworkTopology
> ---------------------------------
>                 Key: HDFS-11923
>                 URL: https://issues.apache.org/jira/browse/HDFS-11923
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Chen Liang
>            Assignee: Chen Liang
>         Attachments: HDFS-11923.001.patch
> I wrote a stress test with {{DFSNetworkTopology}} to verify its correctness under huge
number of datanode changes e.g., data node insert/delete, storage addition/removal etc. The
goal is to show that the topology maintains the correct counters all time. The test is written
that, unless manually terminated, it will keep randomly performing the operations nonstop.
(and because of this, the test is ignored in the patch).
> My local test lasted 40 min before I stopped it, it involved more than one million datanode
changes, and no error happened. We believe this should be sufficient to show the correctness
of {{DFSNetworkTopology}}

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