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Upgrading Oracle Big Data Appliance Cluster to V4.4 with Mammoth (Software Deployment Bundle) Release V4.4 Frequently Asked Questions (FAQ) (Doc ID 2101905.1)

Last updated on JUNE 13, 2021

Applies to:

Big Data Appliance Integrated Software - Version 4.4.0 and later
Linux x86-64


This document provides answers to frequently asked questions on how to upgrade an Oracle Big Data Appliance cluster to Oracle Big Data Appliance 4.4 using Mammoth (Software Deployment  Bundle). 


Questions and Answers

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In this Document
Questions and Answers
 When performing an upgrade to Oracle Big Data Appliance (BDA) V4.4 is it ok to be in Maintenance Mode to avoid Cloudera Manager upgrade-related alerts?
 If the BDA has been changed from its original layout will that be a problem during upgrade?
 What exactly is the rolling part of the rolling upgrade?
 Does the cluster need to be in "Good Health" before upgrading to Oracle Big Data Appliance (BDA) V4.4?
 What Hadoop (CDH) version is on Oracle Big Data Appliance (BDA) V4.4?
 What does Cloudera 5.5.1 Enterprise include?
 Does BDA V4.4 continue to support security options for CDH Hadoop clusters?
 Does the BDA upgrade to 4.4 impact existing sentry and Kerberos configurations?
 On BDA V4.4 can I independently upgrade the R release and the Oracle R Advanced Analytics for Hadoop release?
 On BDA V4.4 can I independently upgrade the Oracle Distribution for R?
 Regarding Big Data SQL will the Exadata prerequisites change in BDA V4.4 from what they were in  BDA v4.3.0?
 What version of NoSQL is on Oracle Big Data Appliance (BDA) V4.4?
 Are there still two separate bundles for BDA 4.4, one for OEL 6 and one for OEL 5?
 How many zipfiles does the Mammoth deployment have in BDA V4.4?
 Is a BDA Base Image being released for v4.4.0?
 Each Mammoth bundle consists of three zip files.  Can the second zipfile be used for reimaging as in the past?
 What new features does Oracle Big Data Appliance 4.4.0 include?
 What is the list of software upgrades are present in BDA V4.4?
 What new software is installed automatically?
 Regarding HTTPS/Network Encryption, how is that enabled after upgrade?
 If HDFS Transparent Encryption is enabled prior to upgrade to BDA V4.4 what happens to it during upgrade?
 Is there anything new for Hue login?
 Do CM, Hue and Oozie use HTTPS security by default?
 Is there a summary of what is in Oracle Big Data SQL V2.0?
 Is there is an interactive bdscli utility on the BDA?
 If BDD was manually installed on BDA V4.1 what happens on upgrade to BDA V4.4?
 If I want to enable BDD should I enable it  on V4.3 and then upgrade to V4.4 or upgrade to V4.4 first?
 Does BDD work with clusters enabled with MIT Kerberos?
 If BDD was installed on BDA V4.3 with Mammoth, will it be upgraded when upgrading to BDA V4.4?
 Can an upgrade to BDA V4.4 be performed from any previous BDA version?
 Does this mean that an upgrade from a pre-V4.0.0 can not go directly to BDA V4.4.0?
 Does this mean that an upgrade from a V2.4 will have a multiple upgrade path for example?
 Are there general guidelines for the upgrade path from older BDA versions to V4.4.0?
 If upgrading from pre-V3.0.1 to V3.1.0 and then to V4.0.0 and then to V4.4, does the critical metadata need to be backed up each time?
 Will there be any problem upgrading BDA v4.1.0 / CDH 5.3.5. to BDA v4.4.0?  On BDA v4.1.0 upgrade to CDH 5.3.5 was supported. 
 Will there be any problem upgrading BDA v4.2.0 / CDH 5.4.4. to BDA v4.4.0?  On BDA v4.2.0 upgrade to CDH 5.4.4 was supported. 
 After upgrade to BDA v4.4.0 can you roll back to a previous BDA version?
 Is it possible to dual boot a starter rack to have BDA v4.4 and v4.3 by using one system disk for BDA v4.4 and one for BDA v4.4?
 What about upgrading a CDH client, will that also require a two step approach?
 The BDA servers are at CDH 5.5.1  Is it a problem if client/edge servers are running CDH 5.5.0?
 Does BDA V4.4 include BigDataSQL V2.0 ?
 Does BDA V4.4 support the BdaDeploy.json file?
 What version of the Oracle BDA Configuration Generation Utility is required for this release?
 When upgrading from V2.5, V2.6 or V3.0.*,3.1, 4.0, 4.1, 4.2 are there changes to the Service Roles Layout?
 Is Spark-on-YARN configured on the BDA V4.4 ?
 If a cluster is running Standalone Spark, what will the Mammoth upgrade do since Spark-on-YARN is now configured in BDA V4.4?
 If Spark-on-YARN was manually configured on BDA V4.1 will that impact upgrade to  BDA V4.4 ?
 What about Impala and Search are they configured on the BDA V4.4?
 If Impala Llama was manually configured in BDA V4.1 will that impact upgrade to BDA V4.4?
 When upgrading with disk encryption enabled why does the "./mammoth -p" output look different than that posted in the upgrade document?
 Where is the list of known CDH 5 issues?
 If the Mammoth upgrade fails do I have to create a SR and upload the diagnostic bundle generated?
 Where is the BDA V4.4 documentation?
 What is the direct link to the documentation "New features" section?
 Are there any deprecated features?
 Where is the Big Data Connector's documentation?
 What are the Oracle Big Data Connectors (BDC) version changes?
 If a patch is installed, will that be impacted by upgrade?
 Is the CDH Deployment still parcel based?
 When upgrading to BDA V4.4 do any one-off patches need to be applied?
 BDA V4.4 includes CDH 5.5.1.  Can I upgrade to a higher CDH version?
 What about patching after the upgrade now that BDA V4.4 is parcel based?
 When upgrading to BDA V4.4 if the cluster verification step fails can Mammoth be rerun?
 Is it possible to run ./mammoth -c in the middle of an upgrade to see how things look?
 What can be done to resolve "Acquiring installation lock"  errors when adding a client/edge node back into a CDH cluster after upgrade?
 Can the client hostnames and/or priviate InfiniBand IP addresses be changed during the upgrade?
 What is the user 'bdatestuser'?
 After upgrade there is a problem using the 'hdfs' principal when AD Kerberos is enabled.   Why is that?
 What is the recommended way to integrate Kerberos with Active Directory (AD) on the BDA?
 Where is the Cloudera documentation on CDH 5.5.1 Known Issues?
 If MS Active Directory is in trust with MIT Kerberos is Used is there a Way to Block Users from Connecting and Running Jobs or Batch Updates During an Upgrade?
 What about MegaCli64, any changes?
 Is there support for the latest currently available ILOM firmware version for all BDA hardware in BDA V4.4?
 Is a BDA upgrade possible if one of the servers is down?
 If one of the ILOMs is down is it possible that a BDA upgrade can proceed?
 Questions/Answers on handling predictive disk failures before/during upgrade.
 If any disks that exhibit "other" errors fail or get into a failing (predictive error) state, right before upgrade or during upgrade what problems will be faced?
 What about a disk that fails in the middle of upgrade?
 Should we remove any failing disks from CM from the DataNode Data Directory, i.e. remove the mount /u0x/hadoop/dfs from there?
 What is a summary of the failed/failing disk issue and upgrade?

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