[BUG] resample fail with gather_map contain nulls

[Camilochiang]

Environment:

• python 3.10.14
• rapids 24.04
• nvidia driver 520.61.05
• CUDA version 11.8
• Ubuntu 22.04.4 LTS

This code works in pandas:

import numpy as np
import pandas as pd
import cudf

sample_rate = 256  
signal_freq = 40  
noise_freq = 50  

# Create time vector
t = np.linspace(0, 10, sample_rate*10)

# Generate sine wave with noise
np_signal = np.sin(2*np.pi*signal_freq*t) + np.sin(2*np.pi*noise_freq*t)
data = dict(time = pd.date_range('2023-06-17 12:00', '2023-06-17 12:00:10', sample_rate*10),
						 sign = np_signal)
test_pandas = pd.DataFrame(data)
test_pandas.resample('1s', on='time').mean().head()
test_pandas.resample('10ms', on='time').mean().head()

	sign
time	
2023-06-17 12:00:00.000	1.110208
2023-06-17 12:00:00.010	-1.044914
2023-06-17 12:00:00.020	0.899606
2023-06-17 12:00:00.030	-0.168008
2023-06-17 12:00:00.040	-0.025423

meawhile in cudf

test_cuda = cudf.DataFrame(data)
test_cuda.resample('1s', on='time').mean().head()
test_cuda.resample('10ms', on='time').mean().head()

File copying.pyx:34, in cudf._lib.pylibcudf.copying.gather()

File copying.pyx:61, in cudf._lib.pylibcudf.copying.gather()

ValueError: CUDF failure at: /opt/conda/conda-bld/work/cpp/src/copying/gather.cu:44: gather_map contains nulls

[mroeschke]

Thanks for the report. With #15560, this should hopefully be fixed in the next release