Known Issues in MapReduce, Apache Hadoop YARN, and YARN Queue Manager
Learn about the known issues in Mapreduce, YARN and YARN Queue Manager, the impact or changes to the functionality, and the workaround.
Known Issues
- CDPD-46685 Nodemanager logs are filled with logs similar to: 2022-11-28 03:42:39,587 WARN org.apache.hadoop.ipc.Client: Address change detected. Old: deh-34631355-niv-master1.e2e-797.dze1-y40r.int.cldr.work/10.114.128.84:8031 New: deh-34631355-niv-master1.e2e-797.dze1-y40r.int.cldr.work/10.114.128.63:8031 2022-11-28 03:43:01,425 WARN org.apache.hadoop.ipc.Client: Address change detected. Old: deh-34631355-niv-master0.e2e-797.dze1-y40r.int.cldr.work/10.114.128.79:8031 New: deh-34631355-niv-master0.e2e-797.dze1-y40r.int.cldr.work/10.114.128.65:8031.
- Restart all YARN NodeManagers, they should come up without issues and Cloudera Manager should recognize them as healthy nodes once the status of them is refreshed upon restart.
- YARN cannot start if Kerberos principal name is changed
- If the Kerberos principal name is changed in Cloudera Manager after launch, YARN will not be able to start. In such case the keytabs can be correctly generated but YARN cannot access ZooKeeper with the new Kerberos principal name and old ACLs.
- Third party applications do not launch if MapReduce framework path is not included in the client configuration
- MapReduce application framework is loaded from HDFS instead of
being present on the NodeManagers. By default the
mapreduce.application.framework.path
property is set to the appropriate value, but third party applications with their own configurations will not launch. - JobHistory URL mismatch after server relocation
- After moving the JobHistory Server to a new host, the URLs listed for the JobHistory Server on the ResourceManager web UI still point to the old JobHistory Server. This affects existing jobs only. New jobs started after the move are not affected.
- CDH-6808: Routable IP address required by ResourceManager
- ResourceManager requires routable
host:port
addresses foryarn.resourcemanager.scheduler.address
, and does not support using the wildcard 0.0.0.0 address. - CDH-49165: History link in ResourceManager web UI broken for killed Spark applications
- When a Spark application is killed, the history link in the ResourceManager web UI does not work.
- CDPD-2936: Application logs are not accessible in WebUI2 or Cloudera Manager
- Running Containers Logs from NodeManager local directory cannot be accessed either in Cloudera Manager or in WebUI2 due to log aggregation.
- COMPX-1445: Queue Manager operations are failing when Queue Manager is installed separately from YARN
- If Queue Manager is not selected during YARN installation, Queue Manager operation are failing. Queue Manager says 0 queues are configured and several failures are present. That is because ZooKeeper configuration store is not enabled.
- COMPX-3329: Autorestart is not enabled for Queue Manager in Data Hub
- In a Data Hub cluster, Queue Manager is installed with autorestart disabled. Hence, if Queue Manager goes down, it will not restart automatically.
- COMPX-5817: Queue Manager UI will not be able to present a view of pre-upgrade queue structure. CM Store is not supported and therefore Yarn will not have any of the pre-upgrade queue structure preserved.
- When a Data Hub cluster is deleted, all saved configurations are also deleted. All YARN configurations are saved in CM Store and this is yet to be supported in Data Hub and Cloudera Manager. Hence, the YARN queue structure also will be lost when a Data Hub cluster is deleted or upgraded or restored.
Technical Service Bulletins
- TSB 2023-641: InvalidClassException while editing queue configurations in YARN Queue Manager UI
- Under situations described below, a user may encounter the following error message while editing queue configurations in the Apache Hadoop YARN (YARN) Queue Manager UI:
- Knowledge article
-
For the latest update on this issue see the corresponding Knowledge article: TSB 2022-641: InvalidClassException while editing queue configurations in YARN Queue Manager UI.
Unsupported Features
-
The following YARN features are currently not supported in Cloudera Data Platform:
- Application Timeline Server (ATSv2 and ATSv1)
- Container Resizing
- Distributed or Centralized Allocation of Opportunistic Containers
- Distributed Scheduling
- Docker on YARN (DockerContainerExecutor) on Data Hub clusters
- Fair Scheduler
- GPU support for Docker
- Hadoop Pipes
- Native Services
- Pluggable Scheduler Configuration
- Queue Priority Support
- Reservation REST APIs
- Resource Estimator Service
- Resource Profiles
- (non-Zookeeper) ResourceManager State Store
- Rolling Log Aggregation
- Shared Cache
- YARN Federation
- Moving jobs between queues