Known Issues and Limitations in Cloudera Manager 6.1.0
The following sections describe known issues and limitations for Cloudera Manager 6.1.0:
- HBase Failure on Upgrade to Cloudera Manager 6.1
- Cloudera Manager Server and Agents encounter TLS issues when the Agent config.ini file is misconfigured
- The restart Cloudera Manager Agent command does not restart the Agent Listener
- TSB-359 Backup and Disaster Recovery (BDR) HDFS and Hive Replications will fail on clusters running Cloudera Manager 6.1.0
- BDR Job Mapper shows the following warning: AuthenticationException: GSSException: No valid credentials provided
- Diff Format changed for Configuration History page
- Backup and Disaster Recovery (BDR) performance regression after upgrading to CDH 6.0.0
- Cloudera Manager allows more than a single space in YARN Admin ACLs
- Integer data types map to Float in Swagger API client
- Package Installation of CDH Fails
- Backup and Disaster Recovery replication to/from Cloudera Manager 6 clusters require Cloudera Manager 5.14.0 or higher
HBase Failure on Upgrade to Cloudera Manager 6.1
Error: java.io.IOException: org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after attempts=36, exceptions:
- In the Cloudera Manager Admin console, go to the Hive service.
- Select the Configuration tab.
- Search for the following property: HiveServer2 Environment Advanced Configuration Snippet (Safety Valve).
- Add the following property and value:
- Click Save Changes.
- Restart HiveServer2:
- Go to the Hive Service.
- Click the Instances tab.
- Click the HiveServer2 link in the table.
- Click .
Cloudera Issue: OPSAPS 49330
Cloudera Manager Server and Agents encounter TLS issues when the Agent config.ini file is misconfigured
The Cloudera Manager Server and Agents incorrectly thinks that TLS is enabled for the Agent if you set use_tls=1 in the Agent config.ini but do not provide a key, certificate, or truststore. This causes several issues, including log messages that indicate TLS is enabled when it is not, missing files from diagnostic bundles, and unavailable logs.
Workaround: Ensure that you specify a key, certificate, and truststore when you configure use_tls=1 in the Agent config.ini file.
Affected Versions: Cloudera Manager 6.1.x
Cloudera Issue: OPSAPS-48898, OPSAPS-48897
The restart Cloudera Manager Agent command does not restart the Agent Listener
When you restart the Cloudera Manager Agent, the Agent Listener (the status_server process) does not restart. This can cause issues if you make changes to TLS for Agents after you have installed Cloudera Manager since the Agent Listener needs to be restarted for TLS changes to take effect.
/opt/cloudera/cm-agent/bin/supervisorctl -c /var/run/cloudera-scm-agent/supervisor/supervisord.conf restart status_server
This command requires root access to the host. supervisorctl is owned by the cloudera-scm user, but supervisord.conf is owned by root.
Affected Versions: Cloudera Manager 6.0.x, 6.1.x
Cloudera Issue: OPSAPS-48886
TSB-359 Backup and Disaster Recovery (BDR) HDFS and Hive Replications will fail on clusters running Cloudera Manager 6.1.0
Backup and Disaster Recovery (BDR) HDFS and Hive Replications will fail when replicating from secured (Kerberized) source clusters to destination clusters that have been upgraded to Cloudera Manager 6.1.0.
This also affects new installations of Cloudera Manager 6.1.0 on the destination cluster if an admin restarts the Cloudera Manager service.
Products affected: Cloudera Manager Backup and Disaster Recovery in a secure (Kerberized) environment
Releases affected: Cloudera Manager 6.1.0 (when used as the destination cluster of HDFS and/or Hive replication)
Users affected: Customers using HDFS or Hive Replication
Severity (Low/Medium/High): High
Root Cause and Impact:
In HDFS and Hive Replication, Cloudera Manager first runs a process on the destination cluster to verify if the replication is possible. Due to a bug, the source cluster is treated as an insecure (non-kerberized) cluster. As a result, replication fails.
You will see the exception javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Fail to create credential. (63) - No service creds)] in the process stderr logs.
Immediate action required: If you use BDR, do not upgrade a destination cluster to Cloudera Manager 6.1.0. Upgrade to Cloudera Manager 6.1.1 or higher when it becomes available.
If you have already upgraded your destination cluster to Cloudera Manager to 6.1.0, use the following workaround:
- For an existing HDFS or Hive replication schedule, select .
- Save the schedule.
Please note that you will need to edit only one schedule even if you have multiple schedules.
Note: This workaround is not persistent. That is, if you restart the Cloudera Manager service, you must repeat the above workaround.
BDR Job Mapper shows the following warning: AuthenticationException: GSSException: No valid credentials provided
2018-12-05 13:57:03,475 WARN [main] org.apache.hadoop.crypto.key.kms.LoadBalancingKMSClientProvider: KMS provider at [https://src-3.example.com:16000/kms/v1/] threw an IOException: java.io.IOException: org.apache.hadoop.security.authentication.client.AuthenticationException: GSSException: No valid credentials provided (Mechanism level: Fail to create credential. (63) - No service creds) at org.apache.hadoop.crypto.key.kms.KMSClientProvider.createConnection(KMSClientProvider.java:492) at org.apache.hadoop.crypto.key.kms.KMSClientProvider.decryptEncryptedKey(KMSClientProvider.java:793)
The warning appears if you try to replicate from an encrypted source cluster that has multiple KMS instances.
Workaround: You can safely ignore this message because the client succeeds upon fail over.
Affected Versions: CDH 6.1.0
Cloudera Issue: CDH-76053
Diff Format changed for Configuration History page
Color formatting for the diff display omits the red and green colors that indicate what was removed and added.
Affected Versions: Cloudera Manager 6.1.0
Backup and Disaster Recovery (BDR) performance regression after upgrading to CDH 6.0.0
Hive replication with BDR experiences a performance regression when comparing CDH 6.0.0 and CDH 5.14.4. The slowdown occurs during the import step. For example, the performance regression may only be 10% for 4 million partitions. As the number of partitions goes down though, the performance impact becomes more visible. For example, 100,000 partitions may experience a 20% performance regression.
Affected Versions: Cloudera Manager 6.0.0, 6.01, 6.1.0; CDH 6.0.0, 6.0.1, 6.1.0
Cloudera Issue: OPSAPS-47520
Cloudera Manager allows more than a single space in YARN Admin ACLs
When adding a YARN Admin ACL in Cloudera Manager, you are allowed to enter multiple spaces in the entry. The space is the separator between the user and group lists, and only a single space should be allowed in the entry. All entries that appear after a second single space in a YARN Admin ACL will be ignored.
Affected Versions: Cloudera Manager 6.0.0, 6.0.1, 6.1.0
Cloudera Issue: OPSAPS-47688
Integer data types map to Float in Swagger API client
Integer data types show up as floating point numbers when using the Cloudera Manager API Python client.
Affected Versions: Cloudera Manager 6.0.0, 6.0.1, 6.1.0
Cloudera Issue: OPSAPS-45689
Package Installation of CDH Fails
When you install CDH with packages from a custom repository, ensure that the version of CDH you select for Select the version of CDH matches the version of CDH for the custom repository. Selecting the CDH version and specifying a custom repository are done during the Select Repository stage of installation.
If the versions do not match, installation fails.
Affected Versions: Cloudera Manager 6.x
Fixed Versions: N/A
Apache Issue: N/A
Cloudera Issue: OPSAPS-45703
Backup and Disaster Recovery replication to/from Cloudera Manager 6 clusters require Cloudera Manager 5.14.0 or higher
You can only use BDR to replicate to/from clusters managed by Cloudera Manager 6 with Cloudera Manager 5.14.0 or higher.
Affected versions: Cloudera Manager 6.x
Cloudera Issue: OPSAPS-42207