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https://issues.apache.org/jira/browse/HDFS-15590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDFS-15590:
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Labels: pull-request-available (was: )
> 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
> Assignee: Shashikant Banerjee
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> {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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