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dora/examples/python-operator-dataflow/merge.py

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  1. import pyarrow as pa

  2. 

  3. with pa.memory_map("image.arrow", "r") as source:

  4.     df_i = pa.ipc.open_file(source).read_all()

  5. 

  6. with pa.memory_map("bbox.arrow", "r") as source:

  7.     df_b = pa.ipc.open_file(source).read_all()

  8. 

  9. df_i = df_i.to_pandas()

  10. df_b = df_b.to_pandas()

  11. 

  12. df = df_i.merge(df_b, on="trace_id")