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From "Bharat Viswanadham (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-4843) testDeleteBlockPool has a bug which makes it fail occasionally
Date Tue, 13 Feb 2018 18:20:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4843?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bharat Viswanadham resolved HDFS-4843.
--------------------------------------
    Resolution: Duplicate
      Assignee: Bharat Viswanadham

> testDeleteBlockPool has a bug which makes it fail occasionally
> --------------------------------------------------------------
>
>                 Key: HDFS-4843
>                 URL: https://issues.apache.org/jira/browse/HDFS-4843
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: federation
>    Affects Versions: 2.0.4-alpha
>         Environment: normal enviroment
>            Reporter: vincent cho
>            Assignee: Bharat Viswanadham
>            Priority: Major
>
> int the test case "testDeleteBlockPool" :
> first we set "DFSConfigKeys.DFS_NAMESERVICES" as "namesServerId1,namesServerId2", but
after a cluster was built, the nameservice are set as "ns1,ns2" because the code set a default
value for them when we new one cluster.
> then we refresh namenode with the nameservice set as "namesServerId2" . so we will add
a new nameservice named "namesServerId2" and remove the two old nameservices. because "ns2"
and "namesServerId2" have the same bpid, so when the add thread run faster than the remove
process, the bpByBlockPoolId in BlockPoolManager will be empty  so that it fails when create
a new file or path.



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