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https://issues.apache.org/jira/browse/HDFS-13265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16502361#comment-16502361
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Chris Douglas commented on HDFS-13265:
--------------------------------------

Sorry for the intermittent attention to the prerequisites, I'm not sure I've 
paged in all the context. With HDFS-13493 and HDFS-13272 committed, is the 
remaining work in this JIRA only to use the config knobs for 
{{MiniDFSCluster}}, in branch-2?

> MiniDFSCluster should set reasonable defaults to reduce resource consumption
> ----------------------------------------------------------------------------
>
>                 Key: HDFS-13265
>                 URL: https://issues.apache.org/jira/browse/HDFS-13265
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, namenode, test
>            Reporter: Erik Krogen
>            Assignee: Erik Krogen
>            Priority: Major
>         Attachments: HDFS-13265-branch-2.000.patch, 
> HDFS-13265-branch-2.000.patch, HDFS-13265.000.patch, 
> TestMiniDFSClusterThreads.java
>
>
> MiniDFSCluster takes its defaults from {{DFSConfigKeys}} defaults, but many 
> of these are not suitable for a unit test environment. For example, the 
> default handler thread count of 10 is definitely more than necessary for 
> (almost?) any unit test. We should set reasonable, lower defaults unless a 
> test specifically requires more.



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