Bruce Robbins created SPARK-23776:
-------------------------------------
Summary: pyspark-sql tests should display build instructions when
components are missing
Key: SPARK-23776
URL: https://issues.apache.org/jira/browse/SPARK-23776
Project: Spark
Issue Type: Improvement
Components: PySpark
Affects Versions: 2.3.0
Reporter: Bruce Robbins
This is a follow up to SPARK-23417.
The pyspark-streaming tests print useful build instructions when certain
components are missing in the build.
pyspark-sql's udf and readwrite tests also have specific build requirements:
the build must compile test scala files, and the build must also create the
Hive assembly. When those class or jar files are not created, the tests throw
only partially helpful exceptions, e.g.:
{noformat}
AnalysisException: u'Can not load class
test.org.apache.spark.sql.JavaStringLength, please make sure it is on the
classpath;'
{noformat}
or
{noformat}
IllegalArgumentException: u"Error while instantiating
'org.apache.spark.sql.hive.HiveExternalCatalog':"
{noformat}
You end up in this situation when you follow Spark's build instructions and
then attempt to run the pyspark tests.
It would be nice if pyspark-sql tests provide helpful build instructions in
these cases.
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