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https://reviews.apache.org/r/34265/
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Review request for Ambari and Vitalyi Brodetskyi.


Bugs: AMBARI-11163
    https://issues.apache.org/jira/browse/AMBARI-11163


Repository: ambari


Description
-------

RU fails in the initial stages as it cannot determine the safemode status of
the NameNode. Based on the investigation, the hdfs user for the customer is a
nologin no shell user. Thus the call `su - hdfs -c 'hdfs dfsadmin -safemode
get` fails with the error "Account is currently not available". _The message
is approximated._

Error:

    
    
    2015-05-14 18:17:33,497 - call['su - hdfs -c 'hdfs dfsadmin -safemode 
get''] {} 
    2015-05-14 18:17:33,572 - Command: su - hdfs -c 'hdfs dfsadmin -safemode 
get' 
    Code: 1. 
    2015-05-14 18:17:33,572 - Error while executing command 
'prepare_rolling_upgrade': 
    Traceback (most recent call last): 
    File 
"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
 line 214, in execute 
    method(env) 
    File 
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py",
 line 67, in prepare_rolling_upgrade 
    namenode_upgrade.prepare_rolling_upgrade() 
    File 
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode_upgrade.py",
 line 100, in prepare_rolling_upgrade 
    raise Fail("Could not transition to safemode state %s. Please check logs to 
make sure namenode is up." % str(SafeMode.OFF)) 
    Fail: Could not transition to safemode state OFF. Please check logs to make 
sure namenode is up. 
    2015-05-14 18:17:33,572 - Error while executing command 
'prepare_rolling_upgrade': 
    Traceback (most recent call last): 
    File 
"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
 line 214, in execute 
    method(env) 
    File 
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py",
 line 67, in prepare_rolling_upgrade 
    namenode_upgrade.prepare_rolling_upgrade() 
    File 
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode_upgrade.py",
 line 100, in prepare_rolling_upgrade 
    raise Fail("Could not transition to safemode state %s. Please check logs to 
make sure namenode is up." % str(SafeMode.OFF)) 
    Fail: Could not transition to safemode state OFF. Please check logs to make 
sure namenode is up. 
    2015-05-14 18:17:33,617 - Error while executing command 'actionexecute': 
    Traceback (most recent call last): 
    File 
"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
 line 214, in execute 
    method(env) 
    File 
"/var/lib/ambari-agent/cache/custom_actions/scripts/ru_execute_tasks.py", line 
148, in actionexecute 
    raise Fail(out) 
    Fail: 2015-05-14 18:17:33,486 - Performing a(n) upgrade of HDFS 
    2015-05-14 18:17:33,486 - Prepare to transition into safemode state OFF 
    2015-05-14 18:17:33,497 - call['su - hdfs -c 'hdfs dfsadmin -safemode 
get''] {} 
    2015-05-14 18:17:33,572 - Command: su - hdfs -c 'hdfs dfsadmin -safemode 
get' 
    Code: 1. 
    2015-05-14 18:17:33,572 - Error while executing command 
'prepare_rolling_upgrade': 
    Traceback (most recent call last): 
    File 
"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
 line 214, in execute 
    method(env) 
    File 
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py",
 line 67, in prepare_rolling_upgrade 
    namenode_upgrade.prepare_rolling_upgrade() 
    File 
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode_upgrade.py",
 line 100, in prepare_rolling_upgrade 
    raise Fail("Could not transition to safemode state %s. Please check logs to 
make sure namenode is up." % str(SafeMode.OFF)) 
    Fail: Could not transition to safemode state OFF. Please check logs to make 
sure namenode is up. 
    2015-05-14 18:17:33,572 - Error while executing command 
'prepare_rolling_upgrade': 
    Traceback (most recent call last): 
    File 
"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
 line 214, in execute 
    method(env) 
    File 
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py",
 line 67, in prepare_rolling_upgrade 
    namenode_upgrade.prepare_rolling_upgrade() 
    File 
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode_upgrade.py",
 line 100, in prepare_rolling_upgrade 
    raise Fail("Could not transition to safemode state %s. Please check logs to 
make sure namenode is up." % str(SafeMode.OFF)) 
    Fail: Could not transition to safemode state OFF. Please check logs to make 
sure namenode is up.


Diffs
-----

  
ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/namenode_upgrade.py
 ddd81fc 

Diff: https://reviews.apache.org/r/34265/diff/


Testing
-------

mvn clean test


Thanks,

Andrew Onischuk

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