ParallelMerge

Not available in Community Designer

Short Description
Ports
Metadata
Details
Compatibility
See also

Short Description

ParallelMerge gathers data records from multiple CloverETL Cluster workers. The algorithm of the component is derived from the regular Merge component.

ComponentSame input metadataSorted inputsInputsOutputsJavaCTLAuto-propagated metadata
ParallelMerge
yes
yes
1[1]1
no
no
yes

[1]  The single input port represents multiple virtual input ports.

Ports

Port typeNumberRequiredDescriptionMetadata
Input0
yes
For input data recordsAny
Output0
yes
For gathered data recordsInput 0

Metadata

ParallelMerge propagates metadata in both directions. The component does not change metadata priorities.

The component has no metadata template.

The component does not require any specific metadata fields on its ports.

ParallelMerge Attributes

ParallelMerge has same attributes as Merge. See Merge Attributes.

Details

ParallelMerge gathers data records from multiple CloverETL Cluster workers.

The algorithm of this component is derived from the regular Merge component. For more details about attributes and other component specific behavior, see the documentation of the Merge component

This component belongs to a group of cluster components that allows the change from a multiple-workers allocation to a single-worker allocation. So the allocation of the component preceding the ParallelMerge component can provide multiple workers. The allocation of the component following the ParallelMerge component has to provide a single worker.

[Note]Note

For more information about this component, see the CloverETL Cluster documentation (part of CloverETL Server documentation).

Compatibility

3.4

The component is available since version 3.4.

4.3.0-M2

In 4.3.0-M2, ClusterMerge was renamed to ParallelMerge.

See also

ParallelSimpleGather
ParallelSimpleCopy
ParallelLoadBalancingPartition
ParallelPartition
Merge
Common Properties of Components
Specific Attribute Types
Common Properties of Data Partitioning Components