Add-MapReduce - PowerShell Cmdlet [Deprecated]
This PowerShell Cmdlet configures MapReduce tasks for processing and generating large data sets with a parallel, distributed algorithm on a clustered cache. The PowerShell Cmdlet also queues any tasks if the server is busy. Task failure errors are logged in the cache log after a specified limit of exceptions are avoided during task execution.
Note
This feature is only available in NCache Enterprise.
Add-MapReduce [-CacheName] [-ChunkSize] [-MaxExceptions] [-MaxTasks] [-QueueSize] [-Server] [-Port] [-NoLogo] [-Credentials]
Examples of Add-MapReduce - PowerShell Cmdlet
- The following command configures MapReduce execution on demoCache with default options.
Add-MapReduce -CacheName demoCache
- The following command configures MapReduce on demoCache with 20 tasks to be executed in parallel with chunks of 100 elements each, 30 tasks to be enqueued and maximum 10 exceptions to be avoided.
Add-MapReduce -CacheName demoCache -MaxTasks 10 -ChunkSize 100 -QueueSize 30 -MaxExceptions 10
Properties
Note
The parameters with asterisk (*) on their names are the required parameters and the rest are optional.
| Parameters | Data Types | Description | Default Value |
|---|---|---|---|
-CacheName* |
<String> |
Specifies the name of the cache for which MapReduce will be configured. | - |
-ChunkSize |
<Integer> |
Specifies the number of elements a chunk should contain before it is transmitted to combiner or reducer. | 0 (zero) |
-MaxExceptions |
<Integer> |
Specifies maximum avoidable exceptions while executing the task. | 0 (zero) |
-MaxTasks |
<Integer> |
Specifies the maximum number of tasks to be executed in parallel. | 0 (zero) |
-QueueSize |
<Integer> |
Specifies the maximum number of tasks that can be queued if the server is busy. | 0 (zero) |
-Server |
<String> |
Specifies a server name where the NCache Service is running and a cache with the specified cache-name is registered. | IP of local machine |
-Port |
<Integer> |
Specifies the port on which NCache Service is running. | 8250 |
-NoLogo |
<SwitchParameter> |
Suppresses display of the logo banner. | - |
-Credentials |
<pscredential> |
Specifies the user credentials required to authorize access for the specified operation. These credentials should belong to a user who has appropriate permissions at the node. | - |
