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https://issues.apache.org/jira/browse/HDFS-2662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13171009#comment-13171009
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Uma Maheswara Rao G commented on HDFS-2662:
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If you start Namenode without formatting, i believe , it should log like 'all
directories are inaccessible or does not exist' message.
is it not coming for you after adding the workaround properties( as suggested
in HADOOP-7489) in hadoop-env.sh?
Is it exited because of other error (Unable to load realm info from
SCDynamicStore) and not ging for real format?
> Namenode should log warning message when trying to start on a unformmatted
> system
> ---------------------------------------------------------------------------------
>
> Key: HDFS-2662
> URL: https://issues.apache.org/jira/browse/HDFS-2662
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Affects Versions: 0.20.203.0
> Environment: Single-node cluster on OS X 10.7 (Lion)
> Reporter: William McNeill
> Priority: Minor
> Labels: format, logging, namenode
>
> When you try to start the namenode for a system that does not have a
> formatted DFS, it fails silently without any indication that the lack of
> formatting was the problem. I tried to run start-dfs.sh on a single-node
> cluster with an unformatted HDFS. The namenode failed to start, but generated
> no warning messages, and its log was empty. After running "hadoop namenode
> -format" everything worked.
> Details in this thread:
> http://mail-archives.apache.org/mod_mbox/hadoop-common-user/201112.mbox/%3CCAN9z%2BopAn-t_f3FRC%3DDtV0n0ysoKd3Fek-fJPb68PMThiPooKg%40mail.gmail.com%3E
> This is a difficult problem to diagnose because the namenode gives you no
> feedback. It would be better if it printed an error message to its log file.
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