[ https://issues.apache.org/jira/browse/HADOOP-9857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chris Nauroth updated HADOOP-9857: ---------------------------------- Attachment: HADOOP-9857.2.patch bq. Would you consider documenting it in the pom.xml where you make this setting for Windows? Good idea! Here is a new patch. > Tests block and sometimes timeout on Windows due to invalid entropy source. > --------------------------------------------------------------------------- > > Key: HADOOP-9857 > URL: https://issues.apache.org/jira/browse/HADOOP-9857 > Project: Hadoop Common > Issue Type: Bug > Components: build, test > Affects Versions: 3.0.0, 2.1.1-beta > Reporter: Chris Nauroth > Assignee: Chris Nauroth > Attachments: HADOOP-9857.1.patch, HADOOP-9857.2.patch > > > Tests are configured to set the entropy source to {{file:///dev/urandom}} to > prevent blocking on machines with low entropy. We've observed that on > Windows, this will cause tests to block for 5 seconds trying to access this > non-existent path the first time the process does something that needs > entropy, such as using a {{SecureRandom}} or creating a {{UUID}}. This can > cause tests to fail due to timeouts. In addition to the initial 5-second > blocking, this causes the JVM to fall back to a slower, non-native seed > generation implementation. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira