Karthik Palanisamy created HDFS-11304:
-----------------------------------------
Summary: Namenode fails to start, even edit log available in the
journal node
Key: HDFS-11304
URL: https://issues.apache.org/jira/browse/HDFS-11304
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs, journal-node
Affects Versions: 2.7.1, 2.8.0
Environment: *HDP 2.4.2.0-258*
Reporter: Karthik Palanisamy
Assignee: Karthik Palanisamy
Priority: Minor
JN => JournalNode
NN => Namenode local directory (_dfs.namenode.name.dir_)
Y/N => Is edit file/log present?
Ex : edits_0000000000001627921-0000000000001627961
*Scenario:*
||JN 1||JN 2||JN 3||NN local|| Is NN started?
|N|N|Y|N|Started|
|Y|N|N|N|Started|
|N|Y|N|N|Failed|
|N|Y|N|Y|Started|
|Y|Y|N|N|Started|
*Note:* Namenode and JN2 installed on the same machine
*Trace :*
ERROR namenode.NameNode (NameNode.java:main(1712)) - Failed to start namenode.
java.io.IOException: There appears to be a gap in the edit log. We expected
txid 1627921, but got txid 1627962.
at
org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext.editLogLoaderPrompt(MetaRecoveryContext.java:94)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:215)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:143)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:837)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:692)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:294)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:983)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:688)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:662)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:726)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:951)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:935)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1641)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1707)
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