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From "Jayush Luniya (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-14354) Express Upgrade: Error during preparing Oozie server step during EU from HDP 2.3.0 to 2.3.4 with java.net.UnknownHostException: nameservice error
Date Sat, 12 Dec 2015 02:30:46 GMT
Jayush Luniya created AMBARI-14354:
--------------------------------------

             Summary: Express Upgrade: Error during preparing Oozie server step during EU
from HDP 2.3.0 to 2.3.4 with java.net.UnknownHostException: nameservice error
                 Key: AMBARI-14354
                 URL: https://issues.apache.org/jira/browse/AMBARI-14354
             Project: Ambari
          Issue Type: Bug
          Components: ambari-server, stacks
    Affects Versions: 2.2.0
            Reporter: Jayush Luniya
            Assignee: Jayush Luniya
             Fix For: 2.2.0


*Steps:*
Install HDP 2.3 cluster with Ambari 2.2.0 with MOTD and security enabled; HA also enabled
Perform EU to HDP 2.3.4

*Result:*
Observed the failure was reported at Preparing Oozie Server on <host_name> phase
Did a retry on the failure and it was still seen; then hit 'Ignore and Proceed' - EU was successful


*stderr shows below*
{code}
Traceback (most recent call last):
  File "/var/lib/ambari-agent/cache/custom_actions/scripts/ru_execute_tasks.py", line 156,
in <module>
    ExecuteUpgradeTasks().execute()
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
line 218, in execute
    method(env)
  File "/var/lib/ambari-agent/cache/custom_actions/scripts/ru_execute_tasks.py", line 153,
in actionexecute
    shell.checked_call(task.command, logoutput=True, quiet=True)
  File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 70, in inner
    result = function(command, **kwargs)
  File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 92, in checked_call
    tries=tries, try_sleep=try_sleep)
  File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 140, in
_call_wrapper
    result = _call(command, **kwargs_copy)
  File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 291, in
_call
    raise Fail(err_msg)
resource_management.core.exceptions.Fail: Execution of '/usr/bin/ambari-python-wrap /var/lib/ambari-agent/cache/common-services/OOZIE/4.0.0.2.0/package/scripts/oozie_server_upgrade.py
upgrade_oozie_database_and_sharelib /var/lib/ambari-agent/data/command-1333.json /var/lib/ambari-agent/cache/custom_actions
/var/lib/ambari-agent/data/structured-out-1333.json INFO /var/lib/ambari-agent/tmp' returned
1. 2015-12-10 13:42:26,009 - call['conf-select create-conf-dir --package hadoop --stack-version
2.3.4.0-3446 --conf-version 0'] {'logoutput': False, 'sudo': True, 'quiet': False, 'stderr':
-1}
2015-12-10 13:42:26,043 - call returned (1, '/etc/hadoop/2.3.4.0-3446/0 exist already', '')
2015-12-10 13:42:26,043 - checked_call['conf-select set-conf-dir --package hadoop --stack-version
2.3.4.0-3446 --conf-version 0'] {'logoutput': False, 'sudo': True, 'quiet': False}
2015-12-10 13:42:26,078 - checked_call returned (0, '/usr/hdp/2.3.4.0-3446/hadoop/conf ->
/etc/hadoop/2.3.4.0-3446/0')
2015-12-10 13:42:26,078 - Ensuring that hadoop has the correct symlink structure
2015-12-10 13:42:26,086 - Execute['/usr/bin/kinit -kt /etc/security/keytabs/oozie.service.keytab
oozie/os-r6-zzudps-daltom20sechanr-3.novalocal@EXAMPLE.COM'] {'logoutput': True, 'user': 'oozie'}
######## Hortonworks #############
This is MOTD message, added for testing in qe infra
2015-12-10 13:42:26,251 - Upgrading the Oozie database...
2015-12-10 13:42:26,251 - Execute['/usr/hdp/2.3.4.0-3446/oozie/bin/ooziedb.sh upgrade -run']
{'logoutput': True, 'user': 'oozie'}
######## Hortonworks #############
This is MOTD message, added for testing in qe infra
  setting OOZIE_CONFIG=${OOZIE_CONFIG:-/usr/hdp/current/oozie-client/conf}
  setting CATALINA_BASE=${CATALINA_BASE:-/usr/hdp/current/oozie-client/oozie-server}
  setting CATALINA_TMPDIR=${CATALINA_TMPDIR:-/var/tmp/oozie}
  setting OOZIE_CATALINA_HOME=/usr/lib/bigtop-tomcat
  setting JAVA_HOME=/usr/jdk64/jdk1.7.0_67
  setting JRE_HOME=${JAVA_HOME}
  setting CATALINA_OPTS="$CATALINA_OPTS -Xmx2048m -XX:MaxPermSize=256m"
  setting OOZIE_LOG=/grid/0/log/oozie
  setting CATALINA_PID=/var/run/oozie/oozie.pid
  setting OOZIE_DATA=/grid/0/hadoop/oozie/data
  setting OOZIE_HTTP_PORT=11000
  setting OOZIE_ADMIN_PORT=11001
  setting JAVA_LIBRARY_PATH=/usr/hdp/current/hadoop-client/lib/native/Linux-amd64-64
  setting OOZIE_CLIENT_OPTS="${OOZIE_CLIENT_OPTS} -Doozie.connection.retry.count=5 "
  setting OOZIE_CONFIG=${OOZIE_CONFIG:-/usr/hdp/current/oozie-server/conf}
  setting CATALINA_BASE=${CATALINA_BASE:-/usr/hdp/current/oozie-server/oozie-server}
  setting CATALINA_TMPDIR=${CATALINA_TMPDIR:-/var/tmp/oozie}
  setting OOZIE_CATALINA_HOME=/usr/lib/bigtop-tomcat
  setting JAVA_HOME=/usr/jdk64/jdk1.7.0_67
  setting JRE_HOME=${JAVA_HOME}
  setting CATALINA_OPTS="$CATALINA_OPTS -Xmx2048m -XX:MaxPermSize=256m"
  setting OOZIE_LOG=/grid/0/log/oozie
  setting CATALINA_PID=/var/run/oozie/oozie.pid
  setting OOZIE_DATA=/grid/0/hadoop/oozie/data
  setting OOZIE_HTTP_PORT=11000
  setting OOZIE_ADMIN_PORT=11001
  setting JAVA_LIBRARY_PATH=/usr/hdp/current/hadoop-client/lib/native/Linux-amd64-64
  setting OOZIE_CLIENT_OPTS="${OOZIE_CLIENT_OPTS} -Doozie.connection.retry.count=5 "

Validate DB Connection
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/grid/0/hdp/2.3.4.0-3446/oozie/libserver/slf4j-log4j12-1.6.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/grid/0/hdp/2.3.4.0-3446/oozie/lib/slf4j-simple-1.6.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
DONE
DB schema exists
Check OOZIE_SYS table does not exist
DONE
Get Oozie DB version
DONE
Oozie DB already upgraded to Oozie version '4.2.0.2.3.4.0-3446'

The SQL commands have been written to: /tmp/ooziedb-1333871269532027423.sql
2015-12-10 13:42:29,473 - Creating a new sharelib and uploading it to HDFS...
2015-12-10 13:42:29,474 - HdfsResource['/user/oozie/share'] {'security_enabled': True, 'hadoop_bin_dir':
'/usr/hdp/2.3.4.0-3446/hadoop/bin', 'keytab': '/etc/security/keytabs/hdfs.headless.keytab',
'default_fs': 'hdfs://nameservice', 'user': 'hdfs', 'hdfs_site': ..., 'kinit_path_local':
'/usr/bin/kinit', 'principal_name': 'hdfs@EXAMPLE.COM', 'recursive_chmod': True, 'owner':
'oozie', 'group': 'hadoop', 'hadoop_conf_dir': '/usr/hdp/2.3.4.0-3446/hadoop/conf', 'type':
'directory', 'action': ['create_on_execute'], 'mode': 0755}
2015-12-10 13:42:29,475 - Execute['/usr/bin/kinit -kt /etc/security/keytabs/hdfs.headless.keytab
hdfs@EXAMPLE.COM'] {'user': 'hdfs'}
2015-12-10 13:42:29,639 - call['ambari-sudo.sh su hdfs -l -s /bin/bash -c 'curl --negotiate
-u : -s '"'"'http://os-r6-zzudps-daltom20sechanr-5.novalocal:50070/jmx?qry=Hadoop:service=NameNode,name=FSNamesystem'"'"'
1>/tmp/tmptuyiVw 2>/tmp/tmpnRQRYn''] {'quiet': False}
2015-12-10 13:42:29,689 - call returned (0, '######## Hortonworks #############\nThis is MOTD
message, added for testing in qe infra')
2015-12-10 13:42:29,690 - call['ambari-sudo.sh su hdfs -l -s /bin/bash -c 'curl --negotiate
-u : -s '"'"'http://os-r6-zzudps-daltom20sechanr-1.novalocal:50070/jmx?qry=Hadoop:service=NameNode,name=FSNamesystem'"'"'
1>/tmp/tmp2Sf_6m 2>/tmp/tmpw44t62''] {'quiet': False}
2015-12-10 13:42:29,737 - call returned (0, '######## Hortonworks #############\nThis is MOTD
message, added for testing in qe infra')
2015-12-10 13:42:29,737 - NameNode HA states: active_namenodes = [('nn1', 'os-r6-zzudps-daltom20sechanr-5.novalocal:50070')],
standby_namenodes = [('nn2', 'os-r6-zzudps-daltom20sechanr-1.novalocal:50070')], unknown_namenodes
= []
2015-12-10 13:42:29,739 - call['ambari-sudo.sh su hdfs -l -s /bin/bash -c 'curl --negotiate
-u : -s '"'"'http://os-r6-zzudps-daltom20sechanr-5.novalocal:50070/jmx?qry=Hadoop:service=NameNode,name=FSNamesystem'"'"'
1>/tmp/tmpg_MZEt 2>/tmp/tmpPAXOA4''] {'quiet': False}
2015-12-10 13:42:29,784 - call returned (0, '######## Hortonworks #############\nThis is MOTD
message, added for testing in qe infra')
2015-12-10 13:42:29,785 - call['ambari-sudo.sh su hdfs -l -s /bin/bash -c 'curl --negotiate
-u : -s '"'"'http://os-r6-zzudps-daltom20sechanr-1.novalocal:50070/jmx?qry=Hadoop:service=NameNode,name=FSNamesystem'"'"'
1>/tmp/tmptGnh3l 2>/tmp/tmpS5ZhV8''] {'quiet': False}
2015-12-10 13:42:29,834 - call returned (0, '######## Hortonworks #############\nThis is MOTD
message, added for testing in qe infra')
2015-12-10 13:42:29,834 - NameNode HA states: active_namenodes = [('nn1', 'os-r6-zzudps-daltom20sechanr-5.novalocal:50070')],
standby_namenodes = [('nn2', 'os-r6-zzudps-daltom20sechanr-1.novalocal:50070')], unknown_namenodes
= []
2015-12-10 13:42:29,837 - call['ambari-sudo.sh su hdfs -l -s /bin/bash -c 'curl -sS -L -w
'"'"'%{http_code}'"'"' -X GET --negotiate -u : '"'"'http://os-r6-zzudps-daltom20sechanr-5.novalocal:50070/webhdfs/v1/user/oozie/share?op=GETFILESTATUS&user.name=hdfs'"'"'
1>/tmp/tmpHQPB7A 2>/tmp/tmpQJqdG4''] {'logoutput': None, 'quiet': False}
2015-12-10 13:42:29,899 - call returned (0, '######## Hortonworks #############\nThis is MOTD
message, added for testing in qe infra')
2015-12-10 13:42:29,900 - HdfsResource[None] {'security_enabled': True, 'hadoop_bin_dir':
'/usr/hdp/2.3.4.0-3446/hadoop/bin', 'keytab': '/etc/security/keytabs/hdfs.headless.keytab',
'default_fs': 'hdfs://nameservice', 'hdfs_site': ..., 'kinit_path_local': '/usr/bin/kinit',
'principal_name': 'hdfs@EXAMPLE.COM', 'user': 'hdfs', 'action': ['execute'], 'hadoop_conf_dir':
'/usr/hdp/2.3.4.0-3446/hadoop/conf'}
2015-12-10 13:42:29,901 - Execute['/usr/hdp/2.3.4.0-3446/oozie/bin/oozie-setup.sh sharelib
create -fs hdfs://nameservice'] {'logoutput': True, 'user': 'oozie'}
######## Hortonworks #############
This is MOTD message, added for testing in qe infra
  setting OOZIE_CONFIG=${OOZIE_CONFIG:-/usr/hdp/current/oozie-client/conf}
  setting CATALINA_BASE=${CATALINA_BASE:-/usr/hdp/current/oozie-client/oozie-server}
  setting CATALINA_TMPDIR=${CATALINA_TMPDIR:-/var/tmp/oozie}
  setting OOZIE_CATALINA_HOME=/usr/lib/bigtop-tomcat
  setting JAVA_HOME=/usr/jdk64/jdk1.7.0_67
  setting JRE_HOME=${JAVA_HOME}
  setting CATALINA_OPTS="$CATALINA_OPTS -Xmx2048m -XX:MaxPermSize=256m"
  setting OOZIE_LOG=/grid/0/log/oozie
  setting CATALINA_PID=/var/run/oozie/oozie.pid
  setting OOZIE_DATA=/grid/0/hadoop/oozie/data
  setting OOZIE_HTTP_PORT=11000
  setting OOZIE_ADMIN_PORT=11001
  setting JAVA_LIBRARY_PATH=/usr/hdp/current/hadoop-client/lib/native/Linux-amd64-64
  setting OOZIE_CLIENT_OPTS="${OOZIE_CLIENT_OPTS} -Doozie.connection.retry.count=5 "
  setting OOZIE_CONFIG=${OOZIE_CONFIG:-/usr/hdp/current/oozie-server/conf}
  setting CATALINA_BASE=${CATALINA_BASE:-/usr/hdp/current/oozie-server/oozie-server}
  setting CATALINA_TMPDIR=${CATALINA_TMPDIR:-/var/tmp/oozie}
  setting OOZIE_CATALINA_HOME=/usr/lib/bigtop-tomcat
  setting JAVA_HOME=/usr/jdk64/jdk1.7.0_67
  setting JRE_HOME=${JAVA_HOME}
  setting CATALINA_OPTS="$CATALINA_OPTS -Xmx2048m -XX:MaxPermSize=256m"
  setting OOZIE_LOG=/grid/0/log/oozie
  setting CATALINA_PID=/var/run/oozie/oozie.pid
  setting OOZIE_DATA=/grid/0/hadoop/oozie/data
  setting OOZIE_HTTP_PORT=11000
  setting OOZIE_ADMIN_PORT=11001
  setting JAVA_LIBRARY_PATH=/usr/hdp/current/hadoop-client/lib/native/Linux-amd64-64
  setting OOZIE_CLIENT_OPTS="${OOZIE_CLIENT_OPTS} -Doozie.connection.retry.count=5 "
log4j:WARN No appenders could be found for logger (org.apache.hadoop.util.Shell).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/grid/0/hdp/2.3.4.0-3446/oozie/lib/slf4j-simple-1.6.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/grid/0/hdp/2.3.4.0-3446/oozie/libserver/slf4j-log4j12-1.6.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.SimpleLoggerFactory]
the destination path for sharelib is: /user/oozie/share/lib/lib_20151210134236

Error: java.net.UnknownHostException: nameservice

Stack trace for the error was (for debug purposes):
--------------------------------------
java.lang.IllegalArgumentException: java.net.UnknownHostException: nameservice
	at org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:406)
	at org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProxies.java:311)
	at org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:176)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:678)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:619)
	at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
	at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2653)
	at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:92)
	at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2687)
	at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2669)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:371)
	at org.apache.oozie.service.HadoopAccessorService$4.run(HadoopAccessorService.java:513)
	at org.apache.oozie.service.HadoopAccessorService$4.run(HadoopAccessorService.java:511)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
	at org.apache.oozie.service.HadoopAccessorService.createFileSystem(HadoopAccessorService.java:511)
	at org.apache.oozie.tools.OozieSharelibCLI.run(OozieSharelibCLI.java:159)
	at org.apache.oozie.tools.OozieSharelibCLI.main(OozieSharelibCLI.java:57)
Caused by: java.net.UnknownHostException: nameservice
	... 19 more
--------------------------------------

Traceback (most recent call last):
  File "/var/lib/ambari-agent/cache/common-services/OOZIE/4.0.0.2.0/package/scripts/oozie_server_upgrade.py",
line 322, in <module>
    OozieUpgrade().execute()
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
line 218, in execute
    method(env)
  File "/var/lib/ambari-agent/cache/common-services/OOZIE/4.0.0.2.0/package/scripts/oozie_server_upgrade.py",
line 262, in upgrade_oozie_database_and_sharelib
    self.create_sharelib(env)
  File "/var/lib/ambari-agent/cache/common-services/OOZIE/4.0.0.2.0/package/scripts/oozie_server_upgrade.py",
line 305, in create_sharelib
    Execute(sharelib_command, user=params.oozie_user, logoutput=True)
  File "/usr/lib/python2.6/site-packages/resource_management/core/base.py", line 154, in __init__
    self.env.run()
  File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 158,
in run
    self.run_action(resource, action)
  File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 121,
in run_action
    provider_action()
  File "/usr/lib/python2.6/site-packages/resource_management/core/providers/system.py", line
238, in action_run
    tries=self.resource.tries, try_sleep=self.resource.try_sleep)
  File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 70, in inner
    result = function(command, **kwargs)
  File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 92, in checked_call
    tries=tries, try_sleep=try_sleep)
  File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 140, in
_call_wrapper
    result = _call(command, **kwargs_copy)
  File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 291, in
_call
    raise Fail(err_msg)
resource_management.core.exceptions.Fail: Execution of '/usr/hdp/2.3.4.0-3446/oozie/bin/oozie-setup.sh
sharelib create -fs hdfs://nameservice' returned 1. ######## Hortonworks #############
This is MOTD message, added for testing in qe infra
  setting OOZIE_CONFIG=${OOZIE_CONFIG:-/usr/hdp/current/oozie-client/conf}
  setting CATALINA_BASE=${CATALINA_BASE:-/usr/hdp/current/oozie-client/oozie-server}
  setting CATALINA_TMPDIR=${CATALINA_TMPDIR:-/var/tmp/oozie}
  setting OOZIE_CATALINA_HOME=/usr/lib/bigtop-tomcat
  setting JAVA_HOME=/usr/jdk64/jdk1.7.0_67
  setting JRE_HOME=${JAVA_HOME}
  setting CATALINA_OPTS="$CATALINA_OPTS -Xmx2048m -XX:MaxPermSize=256m"
  setting OOZIE_LOG=/grid/0/log/oozie
  setting CATALINA_PID=/var/run/oozie/oozie.pid
  setting OOZIE_DATA=/grid/0/hadoop/oozie/data
  setting OOZIE_HTTP_PORT=11000
  setting OOZIE_ADMIN_PORT=11001
  setting JAVA_LIBRARY_PATH=/usr/hdp/current/hadoop-client/lib/native/Linux-amd64-64
  setting OOZIE_CLIENT_OPTS="${OOZIE_CLIENT_OPTS} -Doozie.connection.retry.count=5 "
  setting OOZIE_CONFIG=${OOZIE_CONFIG:-/usr/hdp/current/oozie-server/conf}
  setting CATALINA_BASE=${CATALINA_BASE:-/usr/hdp/current/oozie-server/oozie-server}
  setting CATALINA_TMPDIR=${CATALINA_TMPDIR:-/var/tmp/oozie}
  setting OOZIE_CATALINA_HOME=/usr/lib/bigtop-tomcat
  setting JAVA_HOME=/usr/jdk64/jdk1.7.0_67
  setting JRE_HOME=${JAVA_HOME}
  setting CATALINA_OPTS="$CATALINA_OPTS -Xmx2048m -XX:MaxPermSize=256m"
  setting OOZIE_LOG=/grid/0/log/oozie
  setting CATALINA_PID=/var/run/oozie/oozie.pid
  setting OOZIE_DATA=/grid/0/hadoop/oozie/data
  setting OOZIE_HTTP_PORT=11000
  setting OOZIE_ADMIN_PORT=11001
  setting JAVA_LIBRARY_PATH=/usr/hdp/current/hadoop-client/lib/native/Linux-amd64-64
  setting OOZIE_CLIENT_OPTS="${OOZIE_CLIENT_OPTS} -Doozie.connection.retry.count=5 "
log4j:WARN No appenders could be found for logger (org.apache.hadoop.util.Shell).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/grid/0/hdp/2.3.4.0-3446/oozie/lib/slf4j-simple-1.6.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/grid/0/hdp/2.3.4.0-3446/oozie/libserver/slf4j-log4j12-1.6.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.SimpleLoggerFactory]
the destination path for sharelib is: /user/oozie/share/lib/lib_20151210134236

Error: java.net.UnknownHostException: nameservice

Stack trace for the error was (for debug purposes):
--------------------------------------
java.lang.IllegalArgumentException: java.net.UnknownHostException: nameservice
	at org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:406)
	at org.apache.hadoop.hdfs.NameNodeProxies.createNonHAProxy(NameNodeProxies.java:311)
	at org.apache.hadoop.hdfs.NameNodeProxies.createProxy(NameNodeProxies.java:176)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:678)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:619)
	at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
	at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2653)
	at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:92)
	at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2687)
	at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2669)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:371)
	at org.apache.oozie.service.HadoopAccessorService$4.run(HadoopAccessorService.java:513)
	at org.apache.oozie.service.HadoopAccessorService$4.run(HadoopAccessorService.java:511)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
	at org.apache.oozie.service.HadoopAccessorService.createFileSystem(HadoopAccessorService.java:511)
	at org.apache.oozie.tools.OozieSharelibCLI.run(OozieSharelibCLI.java:159)
	at org.apache.oozie.tools.OozieSharelibCLI.main(OozieSharelibCLI.java:57)
Caused by: java.net.UnknownHostException: nameservice
	... 19 more
--------------------------------------
{code}



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