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This article is about methods that can be used with the JobScheduler for synchronizing the execution of jobs in different Job Chains.

See the How to Execute Jobs in a Job Chain in Parallel article for methods about executing parallel jobs within a job chain in parallel. This method is available for JobScheduler Versions 11.4 and newer and uses significantly less resources than synchronization.

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Using JITL Jobs for the Synchronization of Jobs in different Job Chains

Two JITL Jobs are available for configuring the parallel execution of Jobs in a Job Chain:

The JobScheduler can use a number of methods to synchronize the execution of jobs in different job chains.

Static Configuration

• JobSchedulerJobChainSplitter
  • The Splitter Job is used to divide processing of a main Job Chain into a number of child Job Chains that are then processed in parallel.
  • A Sync Job may be defined later in the Job Chain to bring processing of these child Job Chains back to a single thread.
  • The Splitter Job generates separate Orders for each of the parallel child Job Chain. The Splitter Job will then move processing of the main Job Chain to a Join or Sync Job, if such a Job is defined later in the main Job Chain. See the Job Chains article for more information about the patterns that can be executed with the Splitter Job.
• JobSchedulerSynchronizeJobChains
  • The Sync Job is used to start or continue processing of a main Job Chain after one or more Jobs in different Job Chains have been executed.

Static Configuration

• The following links provide further information and example download files demonstrating the use of the JITL Split and Sync For the static configuration of the parallel execution of jobs:Using JITL split and sync jobs:
  • Example showing how to set up a splitter job
  • Example showing how to set up a sync job
  • Example showing the synchronization of multiple job chains
  • How to start a job chain with a time event and only when another job chain has finished

Alternative Methods for Configuring Dependencies Across Job Chains

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Complex dependencies between jobs and orders across job chains can also be configured using:

• Use backward Backward dependencies:
  
  • How to Configure Backward Dependencies in Jobs and Job ChainsUse event
• Event handlers to implement dependencies between job chains:
  
  • Event handling for job dependencies
  • How To - Event Handling
  • How to use the JobScheduler event handler in a complex job chain

See also

• For more information about configuring workflow dependencies see:
  • Use Cases - Dependency Patterns
  • How to Serialize the Execution of Jobs and Orders
  • How to Configure Backward Dependencies in Jobs and Job Chains

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