Shashikant Banerjee created HDFS-15568:
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Summary: namenode start failed to start when
dfs.namenode.snapshot.max.limit set
Key: HDFS-15568
URL: https://issues.apache.org/jira/browse/HDFS-15568
Project: Hadoop HDFS
Issue Type: Sub-task
Components: snapshots
Reporter: Nilotpal Nandi
Assignee: Shashikant Banerjee
{code:java}
11:35:05.872 AM ERROR NameNode
Failed to start namenode.
org.apache.hadoop.hdfs.protocol.SnapshotException: Failed to add snapshot:
there are already 20 snapshot(s) and the max snapshot limit is 20
at
org.apache.hadoop.hdfs.server.namenode.snapshot.DirectorySnapshottableFeature.addSnapshot(DirectorySnapshottableFeature.java:181)
at
org.apache.hadoop.hdfs.server.namenode.INodeDirectory.addSnapshot(INodeDirectory.java:285)
at
org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotManager.createSnapshot(SnapshotManager.java:447)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:802)
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}
Steps to reproduce:
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directory level snapshot limit set - 100
Created 100 snapshots
deleted all 100 snapshots (in-oder)
No snapshot exist
Then, directory level snapshot limit set - 20
HDFS restart
Namenode start failed.
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