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https://issues.apache.org/jira/browse/HDFS-5244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jinghui Wang reassigned HDFS-5244:
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Assignee: Jinghui Wang
> TestNNStorageRetentionManager#testPurgeMultipleDirs fails because incorrectly
> expects Hashmap values to have order.
> --------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-5244
> URL: https://issues.apache.org/jira/browse/HDFS-5244
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Affects Versions: 2.1.0-beta
> Environment: Red Hat Enterprise 6 with Sun Java 1.7 and IBM java 1.6
> Reporter: Jinghui Wang
> Assignee: Jinghui Wang
> Fix For: 3.0.0, 2.1.0-beta, 2.3.0
>
> Attachments: HDFS-5244.patch
>
>
> The test o.a.h.hdfs.server.namenode.TestNNStorageRetentionManager uses a
> HashMap(dirRoots) to store the root storages to be mocked for the purging
> test, which does not have any predictable order. The directories needs be
> purged are stored in a LinkedHashSet, which has a predictable order. So, when
> the directories get mocked for the test, they could be already out of
> the order that they were added. Thus, the order that the directories were
> actually purged and the order of them being added to the LinkedHashList could
> be different and cause the test to fail.
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