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Suresh Srinivas commented on HDFS-2966: --------------------------------------- Steve, please see HDFS-3002 - comment https://issues.apache.org/jira/browse/HDFS-3002?focusedCommentId=13214890&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13214890 > TestNameNodeMetrics tests can fail under load > --------------------------------------------- > > Key: HDFS-2966 > URL: https://issues.apache.org/jira/browse/HDFS-2966 > Project: Hadoop HDFS > Issue Type: Bug > Components: test > Affects Versions: 0.24.0 > Environment: OS/X running intellij IDEA, firefox, winxp in a > virtualbox. > Reporter: Steve Loughran > Assignee: Steve Loughran > Priority: Minor > Fix For: 0.24.0, 0.23.2 > > Attachments: HDFS-2966.patch, HDFS-2966.patch > > > I've managed to recreate HDFS-540 and HDFS-2434 by the simple technique of > running the HDFS tests on a desktop with out enough memory for all the > programs trying to run. Things got swapped out and the tests failed as the DN > heartbeats didn't come in on time. > the tests both rely on {{waitForDeletion()}} to block the tests until the > delete operation has completed, but all it does is sleep for the same number > of seconds as there are datanodes. This is too brittle -it may work on a > lightly-loaded system, but not on a system under heavy load where it is > taking longer to replicate than expect. > Immediate fix: double, triple, the sleep time? > Better fix: have the thread block until all the DN heartbeats have finished. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira