Module filter 

Vectorized predicate filtering on Arrow arrays.

Applies time-range and tag-equality filters to Arrow RecordBatches, producing filtered batches containing only matching rows.

Functions

apply_filter

Apply a boolean mask to a RecordBatch, returning only matching rows.

combine_masks

Combine multiple boolean masks with AND.

dict_equality_mask

Dictionary-encoded equality filter using Arrow’s vectorized eq kernel.

filter_batch

Apply time range and tag filters to a RecordBatch.

filter_tombstoned

Filter out rows belonging to tombstoned series.

project_batch

Build a RecordBatch with the specified column projection.

tag_equality_mask

Apply a tag equality filter: column == value.

time_range_mask

Apply a time range filter: timestamp >= start AND timestamp <= end.