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    <title>question Re: Error while upgrading to HDP-7.1.7 in Support Questions</title>
    <link>https://community.cloudera.com/t5/Support-Questions/Error-while-upgrading-to-HDP-7-1-7/m-p/367563#M239943</link>
    <description>&lt;P&gt;It solved the problem&lt;/P&gt;&lt;P&gt;Thanks&lt;/P&gt;</description>
    <pubDate>Mon, 03 Apr 2023 07:56:11 GMT</pubDate>
    <dc:creator>dch44</dc:creator>
    <dc:date>2023-04-03T07:56:11Z</dc:date>
    <item>
      <title>Error while upgrading to HDP-7.1.7</title>
      <link>https://community.cloudera.com/t5/Support-Questions/Error-while-upgrading-to-HDP-7-1-7/m-p/367452#M239900</link>
      <description>&lt;P&gt;We are upgrading our cluster from HDP 2.6.5 to HDP-7.1.70 :&lt;/P&gt;&lt;P&gt;During the upgrading process ( about 65 %), it fails to restart the mapreduce/historyserver with the below error.&lt;/P&gt;&lt;P&gt;Unable to find a solution&lt;/P&gt;&lt;P&gt;Any idea or help ?&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;raceback (most recent call last):&lt;BR /&gt;File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/YARN/package/scripts/historyserver.py", line 126, in &amp;lt;module&amp;gt;&lt;BR /&gt;HistoryServer().execute()&lt;BR /&gt;File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 352, in execute&lt;BR /&gt;method(env)&lt;BR /&gt;File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 987, in restart&lt;BR /&gt;self.stop(env, upgrade_type=upgrade_type)&lt;BR /&gt;File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/YARN/package/scripts/historyserver.py", line 47, in stop&lt;BR /&gt;import params&lt;BR /&gt;File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/YARN/package/scripts/params.py", line 29, in &amp;lt;module&amp;gt;&lt;BR /&gt;from params_linux import *&lt;BR /&gt;File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/YARN/package/scripts/params_linux.py", line 374, in &amp;lt;module&amp;gt;&lt;BR /&gt;yarn_registry_dns_principal_name = yarn_registry_dns_principal_name.replace('_HOST', hostname.lower())&lt;BR /&gt;File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/config_dictionary.py", line 73, in __getattr__&lt;BR /&gt;raise Fail("Configuration parameter '" + self.name + "' was not found in configurations dictionary!")&lt;BR /&gt;resource_management.core.exceptions.Fail: Configuration parameter 'yarn.registry-dns.principal' was not found in configurations dictionary!&lt;/P&gt;&lt;BR /&gt;&lt;IMG src="http://community.cloudera.com/t5/image/serverpage/image-id/39857iA9158EC6461A2C5A/image-size/large?v=v2&amp;amp;px=999" border="0" alt="upgrade_hdp7_error_mr.JPG" title="upgrade_hdp7_error_mr.JPG" /&gt;</description>
      <pubDate>Fri, 31 Mar 2023 13:30:33 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Support-Questions/Error-while-upgrading-to-HDP-7-1-7/m-p/367452#M239900</guid>
      <dc:creator>dch44</dc:creator>
      <dc:date>2023-03-31T13:30:33Z</dc:date>
    </item>
    <item>
      <title>Re: Error while upgrading to HDP-7.1.7</title>
      <link>https://community.cloudera.com/t5/Support-Questions/Error-while-upgrading-to-HDP-7-1-7/m-p/367549#M239936</link>
      <description>&lt;P&gt;so it looks like Ambari is looking for an Configuration :&amp;nbsp;yarn.registry-dns.principal and its missing in Configuration.&lt;/P&gt;&lt;P&gt;Can you see adding to yarn-env in Yarn Services configuration helps ?&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;For ex , you can add it via commandline from Ambari serve r:&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;/var/lib/ambari-server/resources/scripts/configs.py -l &amp;lt;AMBARI_HOSTNAME&amp;gt; -t 8080 -u &amp;lt;USER_NAME&amp;gt; -p &amp;lt;PASSWORD&amp;gt; -a set -n &amp;lt;CLUSTER_NAME&amp;gt; -c yarn-env -k 'yarn.registry-dns.principal' -v 'yarn/_HOST@EXAMPLE.COM'&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;In the abouve example i am adding yarn/_HOST@EXAMPLE.COM as value of config :&amp;nbsp;yarn.registry-dns.principal , see if this helps.&lt;/P&gt;</description>
      <pubDate>Mon, 03 Apr 2023 05:24:13 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Support-Questions/Error-while-upgrading-to-HDP-7-1-7/m-p/367549#M239936</guid>
      <dc:creator>akhilsnaik</dc:creator>
      <dc:date>2023-04-03T05:24:13Z</dc:date>
    </item>
    <item>
      <title>Re: Error while upgrading to HDP-7.1.7</title>
      <link>https://community.cloudera.com/t5/Support-Questions/Error-while-upgrading-to-HDP-7-1-7/m-p/367563#M239943</link>
      <description>&lt;P&gt;It solved the problem&lt;/P&gt;&lt;P&gt;Thanks&lt;/P&gt;</description>
      <pubDate>Mon, 03 Apr 2023 07:56:11 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Support-Questions/Error-while-upgrading-to-HDP-7-1-7/m-p/367563#M239943</guid>
      <dc:creator>dch44</dc:creator>
      <dc:date>2023-04-03T07:56:11Z</dc:date>
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