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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7991) Allow users to skip checkpoint when stopping NameNode
Date Wed, 08 Apr 2015 00:23:12 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao updated HDFS-7991:
----------------------------
    Attachment: HDFS-7991.004.patch

The 004 patch uses subshell to run the {{saveNamespace}} command through the hdfs script.
However, to make sure we still use the original {{HADOOP_OPTS}}, currently I have to define
a new environment variable {{HADOOP_NAMENODE_CHECKPOINT_OPTS}}.

[~aw], please let me know if this way looks ok to you. Also any other idea capturing the original
value of {{HADOOP_OPTS}}? Thanks.

> Allow users to skip checkpoint when stopping NameNode
> -----------------------------------------------------
>
>                 Key: HDFS-7991
>                 URL: https://issues.apache.org/jira/browse/HDFS-7991
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 3.0.0
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HDFS-7991.000.patch, HDFS-7991.001.patch, HDFS-7991.002.patch, HDFS-7991.003.patch,
HDFS-7991.004.patch
>
>
> This is a follow-up jira of HDFS-6353. HDFS-6353 adds the functionality to check if saving
namespace is necessary before stopping namenode. As [~kihwal] pointed out in this [comment|https://issues.apache.org/jira/browse/HDFS-6353?focusedCommentId=14380898&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14380898],
in a secured cluster this new functionality requires the user to be kinit'ed.



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