LuciferYang commented on code in PR #48818:
URL: https://github.com/apache/spark/pull/48818#discussion_r1929774391
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sql/connect/shims/src/main/scala/org/apache/spark/shims.scala:
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@@ -35,6 +35,7 @@ package sql {
package execution {
class QueryExecution
+ class SparkStrategy
Review Comment:
Through debugging, I discovered the following information:
```
Symbol 'type org.apache.spark.sql.execution.SparkStrategy' is missing from
the classpath.
This symbol is required by 'type org.apache.spark.sql.Strategy'.
Make sure that type SparkStrategy is in your classpath and check for
conflicting dependencies with `-Ylog-classpath`.
A full rebuild may help if 'org.apache.spark.sql.package' was compiled
against an incompatible version of org.apache.spark.sql.execution.
```
It seems that during the `catalyst` module test, the class loading of the
`package object sql` was triggered, and the type
`org.apache.spark.sql.execution.SparkStrategy` needs to be on the classpath.
However, it has two definitions, one in the `connect-shims` module and the
other in the `sql` module, but neither of these modules seems likely to be
present on the classpath ...
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