Shashikant Banerjee created HDFS-15590:
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Summary: namenode fails to start when ordered snapshot deletion
feature is disabled
Key: HDFS-15590
URL: https://issues.apache.org/jira/browse/HDFS-15590
Project: Hadoop HDFS
Issue Type: Sub-task
Components: snapshots
Reporter: Shashikant Banerjee
Fix For: 3.4.0
{code:java}
1. Enabled ordered deletion snapshot feature.
2. Created snapshottable directory - /user/hrt_6/atrr_dir1
3. Created snapshots s0, s1, s2.
4. Deleted snapshot s2
5. Delete snapshot s0, s1, s2 again
6. Disable ordered deletion snapshot feature
5. Restart Namenode
Failed to start namenode.
org.apache.hadoop.hdfs.protocol.SnapshotException: Cannot delete snapshot s2
from path /user/hrt_6/atrr_dir2: the snapshot does not exist.
at
org.apache.hadoop.hdfs.server.namenode.snapshot.DirectorySnapshottableFeature.removeSnapshot(DirectorySnapshottableFeature.java:237)
at
org.apache.hadoop.hdfs.server.namenode.INodeDirectory.removeSnapshot(INodeDirectory.java:293)
at
org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotManager.deleteSnapshot(SnapshotManager.java:510)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:819)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:287)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:182)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:912)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:760)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:337)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1164)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:755)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:646)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:717)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:960)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:933)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1670)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1737)
{code}
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