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Wei-Chiu Chuang commented on HDFS-12985: ---------------------------------------- Hi [~yzhangal] thanks for the review. Would you please take a further look to see if the fix is applicable to 3.0.1, 2.8.x and older branches? Thanks > NameNode crashes during restart after an OpenForWrite file present in the > Snapshot got deleted > ---------------------------------------------------------------------------------------------- > > Key: HDFS-12985 > URL: https://issues.apache.org/jira/browse/HDFS-12985 > Project: Hadoop HDFS > Issue Type: Bug > Components: hdfs > Affects Versions: 2.8.0 > Reporter: Manoj Govindassamy > Assignee: Manoj Govindassamy > Priority: Major > Fix For: 3.1.0, 2.10.0 > > Attachments: HDFS-12985.01.patch > > > NameNode crashes repeatedly with NPE at the startup when trying to find the > total number of under construction blocks. This crash happens after an open > file, which was also part of a snapshot gets deleted along with the snapshot. > {noformat} > Failed to start namenode. > java.lang.NullPointerException > at > org.apache.hadoop.hdfs.server.namenode.LeaseManager.getNumUnderConstructionBlocks(LeaseManager.java:146) > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getCompleteBlocksTotal(FSNamesystem.java:6537) > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startCommonServices(FSNamesystem.java:1232) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.startCommonServices(NameNode.java:706) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:692) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:844) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:823) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1547) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1615) > {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