Index Writer (Labs)

The Index Writer node saves an in-memory Index Object to a specified local directory or file. This allows preserving indexes generated by indexing nodes (e.g. Single-Field Indexer) for future use in matching, filtering, or search tasks without rebuilding them. This node generates a flow variable containing the absolute path to the stored index file.
The stored index can later be reloaded by the Index Reader Node, enabling efficient reuse of previously built indexes in matching, filtering, or search workflows without reindexing the data.
The node serializes both the indexed data and metadata (such as algorithm parameters, number of entries, and index type) into a compact binary format optimized for exorbyte’s fuzzy matching engine.

Options

File

Defines the file path or name where the index will be written. The full path depends on the Write to option selected.

Create Missing Folders

Automatically creates parent directories if they don’t exist.

If File Exists

Defines overwrite behavior:

• 
  Overwrite:
  Replace any existing file.
• 
  Fail:
  Stop execution if file already exists.

Views

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Workflows

• Index Reader and Writer – Reusing Indexed DataKNIME Hub
• Single-field Indexing and Matching Overview ExamplesKNIME Hub

Links

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Developers