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BUG: pd.compare does not recognize differences with the nullable Int64 data type #48939

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@sergiykhan

Description

@sergiykhan

Pandas version checks

  • I have checked that this issue has not already been reported.

  • I have confirmed this bug exists on the latest version of pandas.

  • I have confirmed this bug exists on the main branch of pandas.

Reproducible Example

import pandas as pd
import numpy as np

x = pd.Series([1, 2, np.NaN], dtype='Int64')
y = pd.Series([1, 2, 3], dtype='Int64')
x.compare(y)

Issue Description

.compare does not return the difference between two Series

Result:

     self  other

Expected Behavior

     self  other
2    NaN   3

Installed Versions

INSTALLED VERSIONS

commit : 87cfe4e
python : 3.9.14.final.0
python-bits : 64
OS : Linux
OS-release : 5.10.102.1-microsoft-standard-WSL2
Version : #1 SMP Wed Mar 2 00:30:59 UTC 2022
machine : x86_64
processor : x86_64
byteorder : little
LC_ALL : en_US.UTF-8
LANG : en_US.UTF-8
LOCALE : en_US.UTF-8

pandas : 1.5.0
numpy : 1.23.2
pytz : 2022.2.1
dateutil : 2.8.2
setuptools : 65.0.0
pip : 22.2.2
Cython : None
pytest : None
hypothesis : None
sphinx : None
blosc : None
feather : None
xlsxwriter : None
lxml.etree : None
html5lib : None
pymysql : None
psycopg2 : 2.9.3
jinja2 : 3.1.2
IPython : 8.4.0
pandas_datareader: None
bs4 : None
bottleneck : None
brotli : 1.0.9
fastparquet : None
fsspec : None
gcsfs : None
matplotlib : 3.5.3
numba : None
numexpr : None
odfpy : None
openpyxl : 3.0.10
pandas_gbq : None
pyarrow : None
pyreadstat : None
pyxlsb : None
s3fs : None
scipy : None
snappy : None
sqlalchemy : 1.4.40
tables : None
tabulate : None
xarray : None
xlrd : None
xlwt : None
zstandard : None
tzdata : 2022.2

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BugNA - MaskedArraysRelated to pd.NA and nullable extension arrays

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