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https://issues.apache.org/jira/browse/HDFS-15568?focusedWorklogId=483117&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-483117
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ASF GitHub Bot logged work on HDFS-15568:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 12/Sep/20 21:14
Start Date: 12/Sep/20 21:14
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #2296:
URL: https://github.com/apache/hadoop/pull/2296#issuecomment-691065657
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Issue Time Tracking
-------------------
Worklog Id: (was: 483117)
Time Spent: 2h (was: 1h 50m)
> 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
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2h
> Remaining Estimate: 0h
>
> {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:
> ----------------------
> 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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