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https://issues.apache.org/jira/browse/AMBARI-20447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15928285#comment-15928285
]
Hudson commented on AMBARI-20447:
---------------------------------
SUCCESS: Integrated in Jenkins build Ambari-branch-2.5 #1275 (See
[https://builds.apache.org/job/Ambari-branch-2.5/1275/])
AMBARI-20447. YARN service check failed during HDP 2.4-2.6 rolling
(dlysnichenko:
[http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=28b0ed044d572e57e669ca704090b9005e9153c6])
* (edit)
ambari-server/src/main/resources/stacks/HDP/2.6/services/YARN/configuration/yarn-site.xml
* (edit)
ambari-server/src/main/resources/stacks/HDP/2.3/upgrades/upgrade-2.6.xml
* (edit)
ambari-server/src/main/resources/stacks/HDP/2.4/upgrades/upgrade-2.6.xml
* (edit)
ambari-server/src/main/resources/stacks/HDP/2.5/upgrades/upgrade-2.6.xml
> YARN service check failed during HDP 2.4-2.6 rolling upgrade with YARN HA
> enabled
> ---------------------------------------------------------------------------------
>
> Key: AMBARI-20447
> URL: https://issues.apache.org/jira/browse/AMBARI-20447
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Reporter: Dmitry Lysnichenko
> Assignee: Dmitry Lysnichenko
> Fix For: 2.5.0
>
> Attachments: AMBARI-20447.patch
>
>
> The problem with YARN service check failure is that during Rolling upgrade
> from HDP-2.4 to HDP-2.6 (with YARN HA turned on):
> # After "core master restart" step, yarn client uses new (HDP-2.6) config and
> fails with Class
> org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider not found
> . Forcing yarn client to use old (HDP-2.4) config until client binary is
> updated helps here
> # After "core slave restart" step, using old YARN client config with old YARN
> client binary does not help. NM/RM classpath points to HDP-2.6. App job gets
> scheduled, but then fails with log:
> {code}17/03/06 16:39:27 INFO service.AbstractService: Service
> org.apache.hadoop.yarn.client.api.impl.AMRMClientImpl failed in state
> STARTED; cause: java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.ClassNotFoundException: Class
> org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider not found
> java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.ClassNotFoundException: Class
> org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider not found
> at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2240)
> at
> org.apache.hadoop.yarn.client.RMProxy.createRMFailoverProxyProvider(RMProxy.java:160)
> at org.apache.hadoop.yarn.client.RMProxy.createRMProxy(RMProxy.java:93)
> at
> org.apache.hadoop.yarn.client.ClientRMProxy.createRMProxy(ClientRMProxy.java:72)
> at
> org.apache.hadoop.yarn.client.api.impl.AMRMClientImpl.serviceStart(AMRMClientImpl.java:186)
> at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
> at
> org.apache.hadoop.yarn.client.api.async.impl.AMRMClientAsyncImpl.serviceStart(AMRMClientAsyncImpl.java:96)
> at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
> at
> org.apache.hadoop.yarn.applications.distributedshell.ApplicationMaster.run(ApplicationMaster.java:559)
> at
> org.apache.hadoop.yarn.applications.distributedshell.ApplicationMaster.main(ApplicationMaster.java:299)
> Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException:
> Class org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider not
> found
> at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2208)
> at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2232)
> ... 9 more
> Caused by: java.lang.ClassNotFoundException: Class
> org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider not found
> at
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2114)
> at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2206)
> ... 10 more
> 17/03/06 16:39:27 INFO service.AbstractService: Service
> org.apache.hadoop.yarn.client.api.async.AMRMClientAsync failed in state
> STARTED; cause: java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.ClassNotFoundException: Class
> org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider not found
> java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.ClassNotFoundException: Class
> org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider not found
> at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2240)
> at
> org.apache.hadoop.yarn.client.RMProxy.createRMFailoverProxyProvider(RMProxy.java:160)
> at org.apache.hadoop.yarn.client.RMProxy.createRMProxy(RMProxy.java:93)
> at
> org.apache.hadoop.yarn.client.ClientRMProxy.createRMProxy(ClientRMProxy.java:72)
> at
> {code}
> # After yarn client is updated to a new binary, service check works fine.
> ----
> Bottom line, this is a known problem with DistributedShell - it was never
> fixed to not rely on cluster's configuration. What this means is that client
> configuration changes like this can break DistributedShell apps over upgrades.
> Unfortunately nothing we do now can fix this broken upgrade for
> DistributedShell - as to ideally fix it, we have to go back in time and
> provide changes.
> We have to do two things
> # Disable DistributedShell based service-check when we go from 2.4 > 2.6. The
> RequestHedgingRMFailoverProxyProvider is added in 2.5, so 2.5 > 2.6 is fine.
> # Also fix yarn-site.xml starting 2.6 with the following change to avoid this
> in the future. The change is from using $HADOOP_CONF_DIR which is inherited
> from the NodeManager to /etc/hadoop/conf/ which is always tied to the client
> version.
> {code}
> <property>
> <name>yarn.application.classpath</name>
> <value>/etc/hadoop/conf/,/usr/hdp/current/hadoop-client/*,/usr/hdp/current/hadoop-client/lib/*,/usr/hdp/current/hadoop-hdfs-client/*,/usr/hdp/current/hadoop-hdfs-client/lib/*,/usr/hdp/current/hadoop-yarn-client/*,/usr/hdp/current/hadoop-yarn-client/lib/*</value>
> </property>
> {code}
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