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Yi Liu edited comment on HDFS-7740 at 2/26/15 2:21 AM: ------------------------------------------------------- Seems it's not the same reason as HDFS-7695 where NN restarts and is unable to leave SafeMode. While in {{testTruncateWithDataNodesRestart}} NN is not restarted and is caused by {{triggerBlockReportForTests}} can't finish. The only possible reason is that the block report on that datanode is not successful. I can't reproduce this issue locally, but I check the log and find there is indeed no block report after that DN restarts. Let me see more details later today. was (Author: hitliuyi): Seems it's not the same reason as HDFS-7695 where NN restarts and is unable to leave SafeMode. While in {{testTruncateWithDataNodesRestart}} NN is not restarted and is caused by {{triggerBlockReportForTests}} can't finish. The only possible reason is that the block report on that datanode is not successful. I can't reproduce this issue locally, but I check the log and find there is indeed no block report after that DN restarts. Let me see more details. > Test truncate with DataNodes restarting > --------------------------------------- > > Key: HDFS-7740 > URL: https://issues.apache.org/jira/browse/HDFS-7740 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: test > Affects Versions: 2.7.0 > Reporter: Konstantin Shvachko > Assignee: Yi Liu > Fix For: 2.7.0 > > Attachments: HDFS-7740.001.patch, HDFS-7740.002.patch, > HDFS-7740.003.patch > > > Add a test case, which ensures replica consistency when DNs are failing and > restarting. -- This message was sent by Atlassian JIRA (v6.3.4#6332)