 | ProcessAllInputPartitionsAttribute Class |
Inheritance HierarchyNamespace: Ookii.Jumbo.Jet
Assembly: Ookii.Jumbo.Jet (in Ookii.Jumbo.Jet.dll) Version: 2.0.0
SyntaxThe ProcessAllInputPartitionsAttribute type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | ProcessAllInputPartitionsAttribute | Initializes a new instance of the ProcessAllInputPartitionsAttribute class |
Properties| Name | Description | |
|---|---|---|
 | TypeId | When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.) |
Methods| Name | Description | |
|---|---|---|
| Equals | Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.) |
| GetHashCode | Returns the hash code for this instance. (Inherited from Attribute.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| IsDefaultAttribute | When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.) |
| Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
RemarksThe only time a task can have multiple input partitions is if its input is a file channel and PartitionsPerTask is larger than 1. This attribute has no effect on child tasks of a compound task with internal partitioning.
If the task that this attribute is applied to is a pull task, it can determine what partition is being processed and how many partitions there are by casting the input record reader to a MultiPartitionRecordReaderT.
However, if the input to a pull task with the ProcessAllInputPartitionsAttribute attribute is not a channel with multiple partitions per task, the input record reader will not be a MultiPartitionRecordReaderT so you should not assume that such a cast will always succeed.
The input partition affinity of the output of a task with the ProcessAllInputPartitionsAttribute attribute is lost. If the output is a child task, it cannot determine what the current input partition is, and if the output is written to the DFS, it will be a single file (rather than a file for each partition, which is the default).
See Also