Huang Xingbo created FLINK-26665:
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Summary: Improve the error of incomplete pyflink installation
package
Key: FLINK-26665
URL: https://issues.apache.org/jira/browse/FLINK-26665
Project: Flink
Issue Type: Sub-task
Components: API / Python
Affects Versions: 1.16.0
Reporter: Huang Xingbo
Currently, if the installation package is incomplete, the error message is very
unfriendly, such as the following error message:
{code: python}
The flink-python jar is not found in the opt folder of the FLINK_HOME:
D:\Anaconda3\lib\site-packages\pyflink
{code}
We could give more useful messages for pyflink users, such as the following
error message:
{code:pythoon}
You can fix it by following steps:
Step 1. Check whether the FLINK_HOME environment variable is set. If so, check
whether there is a flink-python jar package in the $FLINK_HOME/opt directory.
If not, it means that your flink binary is not complete, and you need to go to
the official website to download it again. If not set FLINK_HOME environment
variable, you will skip to step 2
Step 2. Check if there is a flink-python package in the opt directory under the
pyflink installation package you installed. If not, you need to reinstall it
with the command `pip install --force-reinstall apache-flink-libraries`
{code}
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