[ https://issues.apache.org/jira/browse/HDDS-449?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
LiXin Ge updated HDDS-449: -------------------------- Labels: EasyFix (was: ) > Add a NULL check to protect DeadNodeHandler#onMessage > ----------------------------------------------------- > > Key: HDDS-449 > URL: https://issues.apache.org/jira/browse/HDDS-449 > Project: Hadoop Distributed Data Store > Issue Type: Improvement > Reporter: LiXin Ge > Assignee: LiXin Ge > Priority: Minor > Labels: EasyFix > Attachments: HDDS-449.000.patch > > > Add a NULL check to protect the situation below(may only happened in the case > of unit test): > 1.A new datanode register to SCM. > 2. There is no container allocated in the new datanode temporarily. > 3.The new datanode dead and an event was fired to {{DeadNodeHandler}} > 4.In function {{DeadNodeHandler#onMessage}}, there will get nothing in > {{node2ContainerMap}} and {{containers}} will be {{NULL}} > 5.NullPointerException will be throwen in the following iterate of > {{containers}} like: > {noformat} > [ERROR] Tests run: 2, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.535 > s <<< FAILURE! - in org.apache.hadoop.hdds.scm.node.TestDeadNodeHandler > [ERROR] > testStatisticsUpdate(org.apache.hadoop.hdds.scm.node.TestDeadNodeHandler) > Time elapsed: 0.33 s <<< ERROR! > java.lang.NullPointerException > at > org.apache.hadoop.hdds.scm.node.DeadNodeHandler.onMessage(DeadNodeHandler.java:68) > at > org.apache.hadoop.hdds.scm.node.TestDeadNodeHandler.testStatisticsUpdate(TestDeadNodeHandler.java:179) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > {noformat} -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org