ChunkText 2025.10.9.21¶

Bundle¶

com.snowflake.openflow.runtime | runtime-chunking-nar

Description¶

Chunks text with options for recursively splitting by delimiters and max character length. Each chunk is given the following attributes: fragment.identifier, fragment.index, fragment.count, segment.original.filename; these attributes can then be used by the MergeContent processor in order to reconstitute the original FlowFile

Tags¶

chunk, openflow, text

Input Requirement¶

REQUIRED

Supports Sensitive Dynamic Properties¶

false

Properties¶

Property	Description
Chunk Delimiters	Specifies a comma-separated list of character sequences. Meta-characters n, r and t are automatically un-escaped. Delimiters are recursively applied in order to chunk the text.
Chunk Overlap	The max number of characters to include from preceding and subsequent chunks.
Chunking Strategy	Strategy to chunk text. ‘Recursive Delimiters’ will chunk text according to the recursive split by character algorithm. In this algorithm input text is split by the first delimiter and merged back into chunks that do not exceed the ‘Max Chunk Length’. Any splits that exceed ‘Max Chunk Length’ are then recursively split using the next delimiter. ‘Max Chunk Length’ will chunk text by creating chunks that are ‘Max Chunk Length’ in size.
Language	Language to use for parsing sentences.
Max Chunk Length	Maximum number of characters to include in output chunk. Setting this number too high can result in an out of memory error.
Sentence Similarity Threshold	Threshold for determining if two sentences are similar enough to occupy the same chunk. A value of 1.0 indicates the sentences are identical. A value of 0.0 indicates the sentences are completely dissimilar.
Trim Whitespace	Trim whitespace surrounding the output text chunk.

Relationships¶

Name	Description
failure	If any error during parsing occurs, the input Flow File will be routed to the failure relationship.
original	The input Flow File is routed to the original relationship.
success	Text chunks are routed to the success relationship.

Writes attributes¶

Name	Description
segment.original.filename	Original filename of the input Flow File.
fragment.identifier	ID of the parent Flow File used to generate each chunk.
fragment.index	Index of the current Flow File chunk, starting at 0.
fragment.count	The total count of Flow File chunks produced.
chunk.start.offsets	The chunk.start.offsets attribute is added only to the original incoming FlowFile. It is a comma-separated list of start offsets for each chunk that gets generated. For example, if the FlowFile is chunked into 3 child FlowFiles, it might have a value of 0,183,365 indicating that the first chunk starts at offset 0, the second chunk starts at offset 183, and the third chunk starts at offset 365. Offsets are based on the number of characters.
chunk.end.offsets	The chunk.end.offsets attribute is added only to the original incoming FlowFile. It is a comma-separated list of end offsets for each chunk that gets generated. For example, if the FlowFile is chunked into 3 child FlowFiles, it might have a value of 183,365,548 indicating that the first chunk ends at offset 183, the second chunk ends at offset 365, and the third chunk ends at offset 548. Offsets are based on the number of characters.
chunk.strategy	Strategy used to chunk text. One of ‘Max Chunk Length’, ‘Recursive Delimiters’, ‘Sentence’, ‘Semantic’.
chunk.semantic.threshold	Threshold for determining if two sentences are similar enough to occupy the same chunk. This attribute is added only when the ‘Semantic’ chunking strategy is used.
chunk.language	Language used for parsing sentences. This attribute is added only when the ‘Sentence’ or ‘Semantic’ chunking strategy is used.
chunk.delimiters	Comma-separated list of delimiters used to chunk text. This attribute is added only when the ‘Recursive Delimiters’ chunking strategy is used.
chunk.max.chars	Maximum number of characters to include in each chunk.