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