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Posted to dev@ambari.apache.org by "Dmitry Lysnichenko (JIRA)" <ji...@apache.org> on 2014/10/23 17:43:33 UTC
[jira] [Updated] (AMBARI-7925) Namenode can not leave safe mode on
hdp-2.2 stack
[ https://issues.apache.org/jira/browse/AMBARI-7925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dmitry Lysnichenko updated AMBARI-7925:
---------------------------------------
Attachment: AMBARI-7925.patch
> Namenode can not leave safe mode on hdp-2.2 stack
> -------------------------------------------------
>
> Key: AMBARI-7925
> URL: https://issues.apache.org/jira/browse/AMBARI-7925
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 1.7.0
> Environment: branch-1.7.0 122dae7
> stack HDP-2.2
> Reporter: Dmitry Lysnichenko
> Assignee: Dmitry Lysnichenko
> Fix For: 1.7.0
>
> Attachments: AMBARI-7925.patch
>
>
> Initial analysis:
> First namenode start attempt failed for me. Probably, that caused NN to enter safe mode. After fixing perm gen memory size value, I've tried to start NN again. Our stack scripts seem to move NN out of safe mode on start if needed. But on HDP-2.2 stack, command for doing this is deprecated and fails with a non-zero exit code.
> 2014-10-21 16:33:25,973 - Error while executing command 'start':
> Traceback (most recent call last):
> File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 122, in execute
> method(env)
> File "/var/lib/ambari-agent/cache/stacks/HDP/2.0.6/services/HDFS/package/scripts/namenode.py", line 46, in start
> namenode(action="start")
> File "/var/lib/ambari-agent/cache/stacks/HDP/2.0.6/services/HDFS/package/scripts/hdfs_namenode.py", line 60, in namenode
> only_if=dfs_check_nn_status_cmd #skip when HA not active
> File "/usr/lib/python2.6/site-packages/resource_management/core/base.py", line 148, in __init__
> self.env.run()
> File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 149, in run
> self.run_action(resource, action)
> File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 115, in run_action
> provider_action()
> File "/usr/lib/python2.6/site-packages/resource_management/core/providers/system.py", line 237, in action_run
> raise ex
> Fail: Execution of 'su -s /bin/bash - hdfs -c 'export PATH=$PATH:/usr/hdp/current/hadoop-client/bin ; hadoop --config /etc/hadoop/conf dfsadmin -safemode get' | grep 'Safe mode is OFF'' returned 1. DEPRECATED: Use of this script to execute hdfs command is deprecated.
> Instead use the hdfs command for it.
> safemode: Call From 09f.vm/10.77.64.159 to 09f.vm:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
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