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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/64579/
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Review request for Ambari, Dmytro Grinenko, Dmitro Lisnichenko, and Nate Cole.
Bugs: AMBARI-22644
https://issues.apache.org/jira/browse/AMBARI-22644
Repository: ambari
Description
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*STR*
# Deploy HDP-2.6.4.0 cluster with Ambari-2.6.1.0-114
# Apply HBase patch Upgrade on the cluster (this step is optional)
# Then apply Spark2 patch Upgrade on the cluster
# Restart Node Managers
*Result*
NM restart fails with below error:
```
2017-12-10 07:17:02,559 INFO impl.MetricsSystemImpl
(MetricsSystemImpl.java:shutdown(606)) - NodeManager metrics system shutdown
complete.
2017-12-10 07:17:02,559 FATAL nodemanager.NodeManager
(NodeManager.java:initAndStartNodeManager(549)) - Error starting NodeManager
Caused by: java.lang.ClassNotFoundException:
org.apache.spark.network.yarn.YarnShuffleService
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at
org.apache.hadoop.util.ApplicationClassLoader.loadClass(ApplicationClassLoader.java:197)
at
org.apache.hadoop.util.ApplicationClassLoader.loadClass(ApplicationClassLoader.java:165)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at
org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxiliaryServiceWithCustomClassLoader.getInstance(AuxiliaryServiceWithCustomClassLoader.java:169)
at
org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices.serviceInit(AuxServices.java:131)
at
org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
... 8 more
2017-12-10 07:17:02,562 INFO nodemanager.NodeManager
(LogAdapter.java:info(45)) - SHUTDOWN_MSG:
```
The spark properties are correctly being written out as per AMBARI-22525.
Initially, we had defined Spark properties for ATS like this:
```xml
<name>yarn.nodemanager.aux-services.spark_shuffle.classpath</name>
<value>{{stack_root}}/${hdp.version}/spark/aux/*</value>
```
When YARN upgrades without Spark, we run into AMBARI-22525. Seems like the
shuffle classes are installed as part of RPM dependencies, but not the
SparkATSPlugin.
So:
- If we use YARN's version for the Spark classes, then ATS can't find
SparkATSPlugin since that is not part of YARN.
- If we use Spark's version for the classes, then Spark can never upgrade
without YARN since NodeManager can't find the new Spark classes.
However, it seems like shuffle and ATS use different properties. We changed all
3 properties in AMBARI-22525:
```
yarn.nodemanager.aux-services.spark2_shuffle.classpath
yarn.nodemanager.aux-services.spark_shuffle.classpath
yarn.timeline-service.entity-group-fs-store.group-id-plugin-classpath
```
It seems like what need to do is change the spark shuffle stuff back to
hdp.version, but leave ATS using the new version since we're guaranteed to have
Spark installed on the ATS machine.
Diffs
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ambari-server/src/main/resources/common-services/HBASE/0.96.0.2.0/package/scripts/hbase.py
ac71ce4b36
Diff: https://reviews.apache.org/r/64579/diff/1/
Testing
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Manual testing on a patched cluster with YARN/Spark
Thanks,
Jonathan Hurley
