[ https://issues.apache.org/jira/browse/HADOOP-11223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gopal V updated HADOOP-11223: ----------------------------- Component/s: conf > Offer a read-only conf alternative to new Configuration() > --------------------------------------------------------- > > Key: HADOOP-11223 > URL: https://issues.apache.org/jira/browse/HADOOP-11223 > Project: Hadoop Common > Issue Type: Bug > Components: conf > Reporter: Gopal V > Labels: Performance > > new Configuration() is called from several static blocks across Hadoop. > This is incredibly inefficient, since each one of those involves primarily > XML parsing at a point where the JIT won't be triggered & interpreter mode is > essentially forced on the JVM. > The alternate solution would be to offer a {{Configuration::getDefault()}} > alternative which disallows any modifications. > At the very least, such a method would need to be called from > # org.apache.hadoop.io.nativeio.NativeIO::<clinit>() > # org.apache.hadoop.security.SecurityUtil::<clinit>() > # org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider::<clinit> -- This message was sent by Atlassian JIRA (v6.3.4#6332)