Merge pull request #174824 from saachigopal/patch-19

add info around spark package issue

Author: PRMerger9

articles/machine-learning/how-to-troubleshoot-environments.md

@@ -160,6 +160,14 @@ RUN apt-get update && \
 
 Running this command installs the correct module dependencies to configure your environment. 
 
+### Build failure when using Spark packages
+
+Configure the environment to not precache the packages. 
+
+```python
+env.spark.precache_packages = False
+```
+
 ## Service-side failures
 
 See the following scenarios to troubleshoot possible service-side failures.