> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-data-integration/10.2-data-integration/pdi-transformation-steps-reference-overview/single-threader/options-single-threader/options-tab.md).

# Options tab

![Single Threader](https://2745965000-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvZoINBz5C5WnDZQlbOJQ%2Fuploads%2Fgit-blob-e814ff23e1ee064408552e8bb41d73d0e5a3af3e%2Fsingle_threader2.png?alt=media)

This tab contains the following fields:

| Option              | Description                                                                                                                                                                                 |
| ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Injector step**   | Specify the step that that satisfies the Mapping Input Specifications (filename, type, length, and precision) by entering its name or clicking **Get**.                                     |
| **Retrieval step**  | Specify the step from which the data is retrieved by entering its name or clicking **Get**.                                                                                                 |
| **Batch size**      | Specify when processing of a chunk of data starts based on the number of rows received, which is 100 by default. Alternately, specify **Batch time (ms)** to process based on a time delay. |
| **Batch time (ms)** | Specify when processing of a chunk of data starts based on the specified time delay, instead of **Batch size**.                                                                             |


---

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