Release notes version 7.2.0.0

New Features and Important Changes

Core product

• Product has been renamed to Teracloud Streams
  • Teracloud Streams is the continuation of the proven IBM Streams technology. The product was acquired from IBM by 21CS, a subsidiary of Teracloud, and initially branded as 21CS Streams. As part of our strategy to unify our product portfolio, it has now been rebranded as Teracloud Streams. This transition preserves the robust capabilities that enterprises have relied upon while enabling accelerated innovation and modernization under Teracloud's leadership.
  • As part of this transition, some aspects of the product have changed:
    • The default installation directory has changed to /opt/teracloud/streams (for root user installation) and $HOME/teracloud/streams (for non-root user installation).
    • The name of the system service was changed from ibm-streams-domain-id to teracloud-streams-domain-id. If the domain ID contains globalization characters, the system service name will be encoded.
• Support for Red Hat Enterprise Linux (RHEL) 8.10 and 9.4 or later
• Streams now requires a Java Development Kit (JDK) 17 or later install
  • IBM JDK 8 is no longer required nor shipped with the product. Users can now use any JDK 17 or later installation from their favorite vendor. See Java requirements, options, and settings for Teracloud Streams for more information and to configure the JDK to be used with Streams.
• Support for Java 17 and C++ 17
  • With the jump to newer RHEL and JDK versions, applications now support Java 17 and C++ 17 features.
    Important: Existing C++ and Java operators may require changes in order to be compiled. See Oracle's JDK Migration Guide for removed Java APIs, Changes between C++11 and C++14, and Changes between C++14 and C++17 for removed C++ features.
• New Python Operator
  • Add python scripts to your SPL application using Python operators. See Developing Python primitive operators to get started.
• Enhanced REST API
  • Manage your domain and instances with the new REST API. As part of this enhancement, domains now have a new rest service. Additionally, a live view of the REST API reference is now provided with every running domain. See the new REST API reference for a full list of capabilities.
• New Data Exchange feature
  • Directly inject and retrieve tuples from an application using a REST API backed by the Streams Authentication and Authorization service. For more information, see Enabling Streams data exchange.
• TLS 1.3 is now the default cryptographic protocol
  • To make Streams more secure by default, TLS 1.3 is enabled for service-to-service communication and PE-to-PE communication. If the protocol needs to be changed, see Changing the cryptogrpahic protocol and Configuring transport mechanisms.
• Additional enhancements and fixes
  • Keystores for domains now use pkcs12 format instead of JKS.
  • PE containers now gracefully handle disconnected clients.
  • Applications using Export operators better clean up dynamic connections.

Toolkits

• Toolkits have been rebranded to Teracloud Streams
  • Toolkit namespaces have changed from com.ibm.streams[x]. to com.teracloud.streams. to standardize naming conventions and easily identify which toolkits are supported by Teracloud. To help migrate existing applications to the new namespace, see the product-installation-root-directory/7.2.0.0/bin/teracloud-toolkit-migration-tool.sh script.
  • As part of the rebranding, all toolkit major version number have been incremented and require Streams 7.2.0.0 or later product versions.
• New toolkits
  • crossdcfailover - Provides application-level failover across two data centers enabling Disaster Recovery (DR) and Business Continuity (BC)
  • inetserver - Provides support HTTP-Server operators and functions
• Username support for Redis data stores in the DPS toolkit
  • Redis 6 introduced Access Control Lists (ACLs) which allows a username to be specified in the AUTH commands. The DPS toolkit has been updated to allow for this support in the store configuration. See the DPS toolkit reference for more information.

Removed functionality