[ https://issues.apache.org/jira/browse/HDFS-14216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
lujie updated HDFS-14216: ------------------------- Description: was: workload {code:java} curl -i -X PUT -T some.txt "http://hadoop1:9870/webhdfs/v1/input?op=CREATE&excludedatanodes=hadoop2" {code} it will execute the code: {code:java} org.apache.hadoop.hdfs.server.namenode.web.resources.NamenodeWebHdfsMethods.chooseDatanode{ excludes.add(bm.getDatanodeManager().getDatanodeByHost(host));//line280 }{code} if hadoop2 is crash just before line280, then bm.getDatanodeManager().getDatanodeByHost(host) will return null, hence NPE happens > NullPointerException crash the NameNode > --------------------------------------- > > Key: HDFS-14216 > URL: https://issues.apache.org/jira/browse/HDFS-14216 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: lujie > Priority: Critical > > > -- 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