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Long term component architecture

As the main curator of open standards in Hadoop, Cloudera has a track record of bringing new open source solutions into its platform (such as Apache Spark, Apache HBase, and Apache Parquet) that are eventually adopted by the community at large. As standards, you can build longterm architecture on these components with confidence.

 

PLEASE NOTE:

With the exception of DSSD support, Cloudera Enterprise 5.6.0 is identical to CDH 5.5.2/Cloudera Manager 5.5.3  If you do not need DSSD support, you do not need to upgrade if you are already using the latest 5.5.x release.

 

Note: All CDH and Cloudera Manager hosts that make up a logical cluster need to run on the same major OS release to be covered by Cloudera Support.

CDH 5 provides 64-bit packages for RHEL-compatible, SLES, Ubuntu, and Debian systems as listed below.

 

Operating System Version Packages
Red Hat Enterprise Linux (RHEL)-compatible
RHEL (+ SELinux mode in available versions) 5.7 64-bit
  5.10 64-bit
  6.4 64-bit
  6.5 64-bit
  6.6 64-bit
  6.7 64-bit
  7.1 64-bit
  7.2 64-bit
CentOS (+ SELinux mode in available versions) 5.7 64-bit
  5.10 64-bit
  6.4 64-bit
  6.5 64-bit
  6.6 64-bit
  6.7 64-bit
  7.1 64-bit
  7.2 64-bit
Oracle Enterprise Linux (OEL) with Unbreakable Enterprise Kernel (UEK) 5.7 (UEK R2) 64-bit
  5.10 64-bit
  5.11 64-bit
  6.4 (UEK R2) 64-bit
  6.5 (UEK R2, UEK R3) 64-bit
  6.6 (UEK R3) 64-bit
  6.7 (UEK R3) 64-bit
  7.1 64-bit
  7.2 64-bit
SLES
SUSE Linux Enterprise Server (SLES) 11 with Service Pack 2 64-bit
SUSE Linux Enterprise Server (SLES) 11 with Service Pack 3 64-bit
SUSE Linux Enterprise Server (SLES) 11 with Service Pack 4 64-bit
Ubuntu/Debian
Ubuntu Precise 12.04 - Long-Term Support (LTS) 64-bit
  Trusty 14.04 - Long-Term Support (LTS) 64-bit
Debian Wheezy 7.0, 7.1, and 7.8 64-bit

 

Important: Cloudera supports RHEL 7 with the following limitations:

 

Note:

  • Cloudera Enterprise is supported on platforms with Security-Enhanced Linux (SELinux) enabled. Cloudera is not responsible for policy support nor policy enforcement. If you experience issues with SELinux, contact your OS provider.
  • CDH 5.8 DataNode hosts with EMC® DSSD™ D5™ are supported by RHEL 6.6, 7.1, and 7.2.
Selected tab: SupportedOperatingSystems
Component MariaDB MySQL SQLite PostgreSQL Oracle Derby - see Note 5
Oozie 5.5 5.1, 5.5, 5.6, 5.7 8.1, 8.3, 8.4, 9.1, 9.2, 9.3, 9.4

See Note 3

11gR2, 12c Default
Flume Default (for the JDBC Channel only)
Hue 5.5 5.1, 5.5, 5.6, 5.7

See Note 6

Default 8.1, 8.3, 8.4, 9.1, 9.2, 9.3, 9.4

See Note 3

11gR2, 12c
Hive/Impala 5.5 5.1, 5.5, 5.6, 5.7

See Note 1

8.1, 8.3, 8.4, 9.1, 9.2, 9.3, 9.4

See Note 3

11gR2, 12c Default
Sentry 5.5 5.1, 5.5, 5.6, 5.7

See Note 1

8.1, 8.3, 8.4, 9.1, 9.2, 9.3, 9.4

See Note 3

11gR2, 12c
Sqoop 1 5.5 See Note 4 See Note 4 See Note 4
Sqoop 2 5.5 Default

 

 

Note:

  1. MySQL 5.5 is supported on CDH 5.1. MySQL 5.6 is supported on CDH 5.1 and higher. The InnoDB storage engine must be enabled in the MySQL server.
  2. Cloudera Manager installation fails if GTID-based replication is enabled in MySQL.
  3. PostgreSQL 9.2 is supported on CDH 5.1 and higher. PostgreSQL 9.3 is supported on CDH 5.2 and higher. PostgreSQL 9.4 is supported on CDH 5.5 and higher.
  4. For purposes of transferring data only, Sqoop 1 supports MySQL 5.0 and above, PostgreSQL 8.4 and above, Oracle 10.2 and above, Teradata 13.10 and above, and Netezza TwinFin 5.0 and above. The Sqoop metastore works only with HSQLDB (1.8.0 and higher 1.x versions; the metastore does not work with any HSQLDB 2.x versions).
  5. Derby is supported as shown in the table, but not always recommended. See the pages for individual components in the Cloudera Installation and Upgrade guide for recommendations.
  6. CDH 5 Hue requires the default MySQL version of the operating system on which it is being installed, which is usually MySQL 5.1, 5.5, or 5.6.
Selected tab: SupportedDatabases

CDH 5.8.x is supported with the versions shown in the following table:

Minimum Supported Version Recommended Version Exceptions
1.7.0_55 1.7.0_67, 1.7.0_75, 1.7.0_80 None
1.8.0_31 1.8.0_60 Cloudera recommends that you not use JDK 1.8.0_40.

Selected tab: SupportedJDKVersions

Hue

Hue works with the two most recent versions of the following browsers. Cookies and JavaScript must be on.

  • Chrome
  • Firefox
  • Safari (not supported on Windows)
  • Internet Explorer

Hue could display in older versions and even other browsers, but you might not have access to all of its features.

Selected tab: SupportedBrowsers

CDH requires IPv4. IPv6 is not supported.

See also Configuring Network Names.

 

Multihoming CDH or Cloudera Manager is not supported outside specifically certified Cloudera partner appliances. Cloudera finds that current Hadoop architectures combined with modern network infrastructures and security practices remove the need for multihoming. Multihoming, however, is beneficial internally in appliance form factors to take advantage of high-bandwidth InfiniBand interconnects.

 

Although some subareas of the product may work with unsupported custom multihoming configurations, there are known issues with multihoming. In addition, unknown issues may arise because multihoming is not covered by our test matrix outside the Cloudera-certified partner appliances.

Selected tab: SupportedInternetProtocol

The following components are supported by the indicated versions of Transport Layer Security (TLS):

 

Table 1. Components Supported by TLS

Component

Role Name Port Version
Flume   Avro Source/Sink   TLS 1.2
Flume   Flume HTTP Source/Sink   TLS 1.2
HBase Master HBase Master Web UI Port 60010 TLS 1.2
HDFS NameNode Secure NameNode Web UI Port 50470 TLS 1.2
HDFS Secondary NameNode Secure Secondary NameNode Web UI Port 50495 TLS 1.2
HDFS HttpFS REST Port 14000 TLS 1.1, TLS 1.2
Hive HiveServer2 HiveServer2 Port 10000 TLS 1.2
Hue Hue Server Hue HTTP Port 8888 TLS 1.2
Cloudera Impala Impala Daemon Impala Daemon Beeswax Port 21000 TLS 1.2
Cloudera Impala Impala Daemon Impala Daemon HiveServer2 Port 21050 TLS 1.2
Cloudera Impala Impala Daemon Impala Daemon Backend Port 22000 TLS 1.2
Cloudera Impala Impala Daemon Impala Daemon HTTP Server Port 25000 TLS 1.2
Cloudera Impala Impala StateStore StateStore Service Port 24000 TLS 1.2
Cloudera Impala Impala StateStore StateStore HTTP Server Port 25010 TLS 1.2
Cloudera Impala Impala Catalog Server Catalog Server HTTP Server Port 25020 TLS 1.2
Cloudera Impala Impala Catalog Server Catalog Server Service Port 26000 TLS 1.2
Oozie Oozie Server Oozie HTTPS Port 11443 TLS 1.1, TLS 1.2
Solr Solr Server Solr HTTP Port 8983 TLS 1.1, TLS 1.2
Solr Solr Server Solr HTTPS Port 8985 TLS 1.1, TLS 1.2
YARN ResourceManager ResourceManager Web Application HTTP Port 8090 TLS 1.2
YARN JobHistory Server MRv1 JobHistory Web Application HTTP Port 19890 TLS 1.2

Selected tab: SupportedTransportLayerSecurityVersions
Selected tab: SystemRequirements

What's New in CDH 5.8.0

Operating System Support

  • Operating Systems - Support for Debian 8.2.

 

 

Apache HBase

  • Additional metrics have been added to monitor garbage collection pauses and other external pauses that might cause a server process to momentarily block any request processing.
  • New throughput and Bloom filter metrics have been added to the existing HBase microbenchmarks.
  • Downstream users of CDH who build on top of Apache HBase can now pull in fewer transitive dependencies by relying on shaded client artifacts. To do so, use the maven artifact hbase-shaded-client where you would normally use the hbase-client artifact. All HBase APIs remain the same. Note: In a previous release of CDH, this maven artifact exists but does not contain any of the needed classes to interact with an HBase cluster.
  • The HMaster Web UI now shows the aggregate of all space being used by snapshots.

Hue

General Features:
  • Rebase of Hue on upstream Hue 3.10.
  • Refactor of Hue Infrastructure:
    • Performance is further optimized for large numbers of databases and tables.
    • Exporting and importing documents is improved.
SQL Editor and Browser:
  • Revamp of the Hue SQL Application:
    • Editor is redesigned to create a single-page experience.
    • Code editor is redesigned with enhanced auto-complete, keyboard shorts, search and replace, and more.
    • A live status of the query history displays as an icon.
Admin and Security:
  • HUE-3386: Users are auto-logged out when TTL Expires. See Securing Sessions.
  • Hue-3808: Users can do live DEBUG log toggling. See Enable DEBUG.
  • A new step in the Cloudera Manager Add Service wizard helps configure and test an external Hue database.
Search:
Oozie:
  • Hue-3464: The dashboard and editor are decoupled for granular access.
  • Saved Hive queries can be dragged and dropped into a workflow.

Apache Oozie

  • OOZIE-2330 : The Spark Action now allows <file> and <archive> elements. It also omits <job-tracker> and <name-node> elements to allow for the use of the global or default values.
  • The launcher job no longer uses YARN's uber mode by default.

Cloudera Search

Apache Sentry

  • Sentry adds support for securing data on Amazon S3. As a result, Sentry will now be able to secure URIs with an S3 schema.
  • Cloudera Search adds support for storing permissions in the Sentry service. You can enable storing permissions in the Sentry service by Enabling Sentry Policy File Authorization for Solr. If you have already configured Sentry's policy file-based approach, you can migrate existing authorization settings as described in Migrating from Sentry Policy Files to the Sentry Service. solrctl has been extended to support:
    • Migrating existing policy files to the Sentry service
    • Managing managing permissions in the Sentry service
  • SENTRY-1175: Improved usability for Sentry URIs and URI privileges. If URIs in Hive DDL statements or URI privileges lack scheme and authority components, Sentry automatically completes such URIs by applying the default scheme and authority based on the HDFS configuration provided to Sentry.
  • Performance Improvements
    • SENTRY-1293: ResourceAuthorizationProvider.doHasAccess no longer performs expensive operations to convert string permissions to Privilege objects.
    • SENTRY-1292: Reordered the DBModelAction EnumSet to improve authorization performance.

 

 

 

 

 

 

Selected tab: WhatsNew

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