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From "Erik Krogen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-13265) MiniDFSCluster should set reasonable defaults to reduce resource consumption
Date Tue, 13 Mar 2018 22:12:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-13265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Erik Krogen updated HDFS-13265:
-------------------------------
    Attachment: HDFS-13265.000.patch

> 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-13265.000.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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