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- A "splitter" job has to be included for each "set" of job nodes that are to be processed in parallel. The splitter job starts the parallel jobs as soon as it itself is started.
- In order to do this the splitter job has to "know" the names of the parallel nodes, which are specified in the splitter job's state_names parameter (see How to set and read job , and order and node parameters).
- The parallel processing normally ends at a specific node in the the chain: thereafter processing continues serially. This node is the synchronisation synchronization node and implemented using the Sync-Job.
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- The splitter job state_names parameter is used to specify the node names of the jobs that are to be started in parallel (see How to set and read job , and order and node parameters).
- The node names are to be separated by semi-colons.
- In job chains with this diamond pattern structure, the parameters are specified for the job chain and referred to as node parameters. Node parameters can be used to specify parameters for more than one splitter in a job chain, independently of one another, as in our example, without creating conflicts.
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In the example described above, one of the first nodes would then be split_partitions:export_table_partition_1.
This allows the diagram algorithmus algorithms in JOE to know and correctly display the nodes that directly follow on from the splitter. This is because the JobScheduler syntax does not recognise recognize predecessor relationships (only successors).
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The name of the error node should either contain the job name or be identical with it. This means that in the event of an processing error in the job chain, it is possible to see immediately in JOC the point in the job chain where the abnormal termination occuredoccurred.
In addition, the name should start with an "!" (an exclamation point, or with another unique special character). This makes it easier to see in the order history in JOC that the job chain has terminated abnormally.
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- JobSchedulerSynchronizeJobChains.
- Examples for using Sync-Jobs see JobScheduler_FAQ#How_to_syncronize_jobs Examples - Jobs, Job Chains and Orders
Downloads
You can download the example described in this FAQ : insert_to_export_table_parallel.zip.