Srinivasu Majeti created HDFS-15446: ---------------------------------------
Summary: CreateSnapshotOp fails during edit log loading for /.reserved/raw/path with error java.io.FileNotFoundException: Directory does not exist: /.reserved/raw/path Key: HDFS-15446 URL: https://issues.apache.org/jira/browse/HDFS-15446 Project: Hadoop HDFS Issue Type: Bug Components: hdfs Affects Versions: 3.2.0, 3.3.0 Reporter: Srinivasu Majeti Assignee: Stephen O'Donnell After allowing snapshot creation for a path say /app-logs , when we try to create snapshot on /.reserved/raw/app-logs , its successful with snapshot creation but later when Standby Namenode is restarted and tries to load the edit record OP_CREATE_SNAPSHOT , we see it failing and Standby Namenode shuts down with an exception "ava.io.FileNotFoundException: Directory does not exist: /.reserved/raw/app-logs" . Here are the steps to reproduce : {code:java} # hdfs dfs -ls /.reserved/raw/ Found 15 items drwxrwxrwt - yarn hadoop 0 2020-06-29 10:27 /.reserved/raw/app-logs drwxr-xr-x - hive hadoop 0 2020-06-29 10:29 /.reserved/raw/prod ++++++++++++++ [root@c3230-node2 ~]# hdfs dfsadmin -allowSnapshot /app-logs Allowing snapshot on /app-logs succeeded [root@c3230-node2 ~]# hdfs dfsadmin -allowSnapshot /prod Allowing snapshot on /prod succeeded ++++++++++++++ # hdfs lsSnapshottableDir drwxrwxrwt 0 yarn hadoop 0 2020-06-29 10:27 1 65536 /app-logs drwxr-xr-x 0 hive hadoop 0 2020-06-29 10:29 1 65536 /prod ++++++++++++++ [root@c3230-node2 ~]# hdfs dfs -createSnapshot /.reserved/raw/app-logs testSS Created snapshot /.reserved/raw/app-logs/.snapshot/testSS {code} Exception we see in Standby namenode while loading the snapshot creation edit record. {code:java} 2020-06-29 10:33:25,488 ERROR namenode.NameNode (NameNode.java:main(1715)) - Failed to start namenode. java.io.FileNotFoundException: Directory does not exist: /.reserved/raw/app-logs at org.apache.hadoop.hdfs.server.namenode.INodeDirectory.valueOf(INodeDirectory.java:60) at org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotManager.getSnapshottableRoot(SnapshotManager.java:259) at org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotManager.createSnapshot(SnapshotManager.java:307) at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:772) at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:257) {code} -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org