Index Reader (Labs)

The Index Reader node loads a previously stored Index Object file from local or relative storage and reconstructs it in memory.
This node is typically used together with the Index Writer Node, which stores the index file created by the Single-Field Indexer.
Once loaded, the reconstructed Index Object can be directly connected to downstream nodes like the Approximate Index Matcher for fuzzy search, filtering, or record linkage tasks.
This approach eliminates redundant indexing computations and speeds up execution for workflows handling large or frequently used datasets.

Options

File

Path to the stored index file to load. Can also be supplied via a flow variable (e.g. from the Index Writer node).

Validate Index

If enabled, verifies file integrity and compatibility before loading.

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