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https://issues.apache.org/jira/browse/HDFS-15527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17178642#comment-17178642
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Ayush Saxena commented on HDFS-15527:
-------------------------------------
{quote}The new name nodes never be part of existing name space
{quote}
Are you adding a namespace or a namenode to an existing namespace.
if namenode then did you do bootstrapStandby?
{{hdfs namenode -bootstrapStandby}}
Well this doesn't seems to be a bug, you need to follow the doc properly, if
things don't work, you can try getting help at hadoop user mailing list, with
details of your configurations and steps you followed
> Error On adding new Namespace
> -----------------------------
>
> Key: HDFS-15527
> URL: https://issues.apache.org/jira/browse/HDFS-15527
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: federation, ha, nn
> Affects Versions: 3.0.0
> Reporter: Thangamani Murugasamy
> Priority: Blocker
>
> We have one namespace, trying to add other one, always getting below error
> message.
>
> The new name nodes never be part of existing name space, also don't see any
> "nn" directories before adding name space.
>
> 2020-08-12 04:59:53,947 WARN
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Encountered exception
> loading fsimage
> java.io.IOException: NameNode is not formatted.
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:237)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1084)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:709)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:665)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:727)
> at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:950)
> at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:929)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1653)
> at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1720)
> 2020-08-12 04:59:53,955 DEBUG
> org.apache.hadoop.hdfs.server.namenode.FSEditLog: Closing log when already
> closed
> ==============
>
>
> 2020-08-12 04:59:53,976 ERROR
> org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode.
> java.io.IOException: NameNode is not formatted.
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:237)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1084)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:709)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:665)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:727)
> at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:950)
> at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:929)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1653)
> at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1720)
> 2020-08-12 04:59:53,978 DEBUG org.apache.hadoop.util.ExitUtil: Exiting with
> status 1: java.io.IOException: NameNode is not formatted.
> 1: java.io.IOException: NameNode is not formatted.
> at org.apache.hadoop.util.ExitUtil.terminate(ExitUtil.java:265)
> at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1726)
> Caused by: java.io.IOException: NameNode is not formatted.
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:237)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1084)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:709)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:665)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:727)
> at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:950)
> at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:929)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1653)
> at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1720)
> 2020-08-12 04:59:53,979 INFO org.apache.hadoop.util.ExitUtil: Exiting with
> status 1: java.io.IOException: NameNode is not formatted.
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