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Reference
Find details on the SPL language, toolkits, APIs, commands, and more.
Toolkits
A toolkit is a set of SPL artifacts, which are organized into a package. Toolkits make SPL or native functions and primitive or composite operators reusable across different applications.
Toolkits
Toolkit com.teracloud.streams.teda 4.0.0
Troubleshooting
Application framework
Job submission fails

Welcome
Learn about the core capabilities of Teracloud® Streams, its architecture, and key concepts.
Installing
Use this information to install, upgrade, and uninstall the Teracloud® Streams product.
Configuring
Create a basic or an enterprise domain which is a single point for configuring and managing common resources, security, and instances.
Administering
Administer the product by using the Teracloud® Streams graphical user interface, APIs, or the streamtool command-line interface.
Developing
Develop stream applications with the Streams Processing Language (SPL), Java, and Python.
Troubleshooting
Resolve problems with Teracloud® Streams using the troubleshooting tools provided with the product as well as the resources offered by Teracloud Support.
Reference
Find details on the SPL language, toolkits, APIs, commands, and more.
- APIs
  Application programming interfaces (APIs) provide functions that simplify applications development.
- Job configuration overlays
  You can specify or change configuration parameters when you use the submitjob or updateoperators operations. The settings control submission constraints, host constraints and locations, and operator status. Parameters are captured and updated in the configuration JSON file. When you change the values in the job configuration overlay file, the changes override any previously set values.
- Commands
  Teracloud® Streams provides a number of commands you use to perform tasks.
- Operator model
  An operator model is an XML document that describes the basic properties of a primitive operator.
- Streams Processing Language (SPL)
  Streams Processing Language (SPL) is a distributed data flow composition language that is used in Teracloud® Streams. SPL has primitive types, program structures, and definitions that are tailored for streaming data.
- Toolkits
  A toolkit is a set of SPL artifacts, which are organized into a package. Toolkits make SPL or native functions and primitive or composite operators reusable across different applications.
  - Specialized toolkit requirements and restrictions
    Several of the specialized toolkits require RPMs that are not required by the Teracloud® Streams product. There are also toolkit restrictions on some platforms.
  - Toolkits
- SPLDOC markup
  You can use SPLDOC markup in the descriptions associated with the SPL artifacts in a toolkit. The spl-make-doc command generates HTML documentation from the marked up artifacts.
Glossary
Use this glossary to find terms and definitions for Teracloud® Streams.

Job submission fails

If your job submission fails because of missing host tags, set the host tags in the domain configuration.

Symptoms

You see an error message similar to the following:


st submitjob output/LookupManagerMain/common.lookup.LookupManager.Main.sab
...
CDISR3027E The job submission, or processing element restart, failed. A placement that

meets the constraints of all the processing elements was not found. For more informat ion, see the messages that follow this one. CDISR3041E Job ID 0 cannot be submitted because the job placement constraints cannot b e met. For more information, see the messages that follow this one.


...
CDISR3070I None of the hosts can be found in the LookupManagerPool host pool. ... Ensure that the hosts with the following host pool tags are configured and started. The host pool tags are: common_lookup_lookup_writer.
...
[streamsadmin@host]$

Diagnosing the problem

The TEDA framework uses framework-specific host tags in a multi-host configuration. These tags must be set in the domain configuration.

Resolving the problem

Add the host tags to the domain as described in "Preparing the domain and instance."