[jira] [Resolved] (HBASE-25449) 'dfs.client.read.shortcircuit' should not be set in hbase-default.xml

["Josh Elser (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-25449?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Josh Elser resolved HBASE-25449.
--------------------------------
    Hadoop Flags: Reviewed
    Release Note: The presence of HDFS short-circuit read configuration properties in hbase-default.xml inadvertently causes short-circuit reads to not happen inside of RegionServers, despite short-circuit reads being enabled in hdfs-site.xml.
      Resolution: Fixed

Thanks for a great fix (and test), [~shenshengli]!

> 'dfs.client.read.shortcircuit' should not be set in hbase-default.xml
> ---------------------------------------------------------------------
>
>                 Key: HBASE-25449
>                 URL: https://issues.apache.org/jira/browse/HBASE-25449
>             Project: HBase
>          Issue Type: Improvement
>          Components: conf
>    Affects Versions: 2.0.1
>            Reporter: shenshengli
>            Assignee: shenshengli
>            Priority: Major
>             Fix For: 3.0.0-alpha-1, 2.2.7, 2.5.0, 2.4.1, 2.3.5
>
>
> I think this parameter is not suitable for in hbase-default.xml, because in this case, HDFS explicitly set to "dfs.client.read.shortcircuit=true", hbase rely on HDFS configuration, the parameters in hbase service still is false.Must be explicitly in hbase-site.xml is set to "dfs.client.read.shortcircuit=true" to take effect.



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