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Upgrading Oracle Big Data Appliance Cluster to V4.2 with Mammoth (Software Deployment Bundle) Release V4.2 Frequently Asked Questions (FAQ) (Doc ID 2013555.1)

Last updated on JUNE 07, 2021

Applies to:

Big Data Appliance Integrated Software - Version 4.2.0 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 4.2 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) V4.2 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?
 Does the cluster need to be in "Good Health" before upgrading to Oracle Big Data Appliance (BDA) V4.3?
 What Hadoop (CDH) version is on Oracle Big Data Appliance (BDA) V4.2?
 What does Cloudera 5.4.0 Enterprise include?
 Does BDA V4.2 continue to support security options for CDH Hadoop clusters?
 Does the BDA upgrade to 4.2 impact existing sentry and Kerberos configurations?
 Is MapReduce Version 1 still supported?
 What version of NoSQL is on Oracle Big Data Appliance (BDA) V4.2?
 Are there still two separate bundles for BDA 4.2, one for OEL 6 and one for OEL 5?
 Is a BDA Base Image being released for v4.2.0?
 What version should be used to reimage prior to installing BDA Mammoth V4.2?
 Each Mammoth bundle consists of two zip files.  Can the second zipfile be used for reimaging as in the past?
 What new features does Oracle Big Data Appliance 4.2.0 include?
 What is the list of software upgrades are present in BDA V4.2?
 What new software is installed automatically?
 Is there a summary of what is in Oracle Big Data SQL?
 If Big Data SQL (BDS) v1.1 is installed on BDA v4.1.0,  can you directly upgrade to BDA v4.2 without removing BDS v1.1?
 Are any additional steps required if extending a cluster with Big Data SQL V1.1?
 Does BDA V4.2 support Big Data Discovery?
 What is new with Apache Sentry?
 What is new with  Microsoft Active Directory Server in Mammoth?
 What about Cloudera Navigator Trustee Server?
 What about Oracle Big Data Appliance X5-2 ?
 Can an upgrade to BDA V4.2 be performed from any previous BDA version?
 Does this mean that an upgrade from a pre-V3.0.1 can not go directly to BDA V4.2.*?
 Does this mean that an upgrade from a V2.4 will have a multiple upgrade path?
 Are there general guidelines for the upgrade path from older BDA versions to V4.2.0?
 If upgrading from pre-V3.0.1 to V3.0.1and then V3.0.1 to  V4.2  in one pass, does the critical metadata need to be backed up on V3.0.1 if it was backed up on the pre-V3.0.1 BDA?
 Will there be any problem upgrading BDA v4.1.0 / CDH 5.3.2. to BDA v4.2.0?  On BDA v4.1.0 upgrade to CDH 5.3.2 was supported.
 After upgrade to BDA v4.2.0 can you roll back to BDA v4.1.0?
 Is it possible to dual boot a starter rack to have BDA v4.1 and v4.2 by using one system disk for BDA v4.1 and one for BDA v4.2?
 After upgrading the BDA, does the CDH client need to be upgraded to the same underlying version i.e. CDH 5.3.0 in the case of upgrading to BDA 4.1?
 What about upgrading a CDH client, will that also require a two step approach?
 The BDA servers are at CDH 5.4.0.  What if my client/edge servers are running CDH 5.4.1? Do client/edge servers need to be downgraded from CDH 5.4.1 to CDH 5.4.0?
 Does BDA V4.2 include BigDataSQL V1.1?
 Does BDA V4.2 support the BdaDeploy.json file?
 What version of the Oracle BDA Configuration Generation Utility is required for this release?
 What about installing a new multirack cluster (not an upgrade question but for 4.1 multirack installs anything special)?
 When upgrading from V2.5, V2.6 or V3.0.*,3.1, 4.0  are there changes to the Service Roles Layout?
 Is Spark-on-YARN configured on the BDA V4.2 ?
 If a cluster is running Standalone Spark, what will the Mammoth upgrade do since Spark-on-YARN is now configured in BDA V4.2?
 What about Impala, Search, and Navigator are they configured on the BDA V4.2?
 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?
 Is Big Data Discovery (BDD) supported on BDA V4.2?
 Where is the BDA V4.2 documentation?
 What is the direct link to the documentation "New features" section?
 Where is the Big Data Connector's documentation?
 What are the Oracle Big Data Connectors (BDC) version changes?
 What features are deprecated?
 What considerations should be considered when upgrading to 4.2?
 1. What changes are expected when upgrading a Kerberized vs non-Kerberized cluster?
 2. Will any ACLs, sentry settings be impacted (we do assume no) as we manage security with these tools now?
 3. We have one patch installed, how does that impact the upgrade?
 Is the CDH Deployment still parcel based?
 When upgrading to BDA V4.2 do any one-off patches need to be applied?
 BDA v4.2 includes CDH 5.4.0.  Can I upgrade to CDH 5.4.1 or CDH 5.4.2?
 What about patching after the upgrade now that BDA V4.2 is parcel based?
 When upgrading to BDA V4.2 if the cluster verification step fails can Mammoth be rerun?
 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?
 Where is the Cloudera documentation on CDH 5.4 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?

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