Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/17064#discussion_r103594974
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/CachedTableSuite.scala ---
@@ -634,4 +634,28 @@ class CachedTableSuite extends QueryTest with
SQLTestUtils with SharedSQLContext
assert(getNumInMemoryRelations(cachedPlan2) == 4)
}
}
+
+ test("refreshByPath should refresh all cached plans with the specified
path") {
+ def f(path: String, spark: SparkSession, dataCount: Int): DataFrame = {
+ spark.catalog.refreshByPath(path)
+ val data = spark.read.parquet(path)
+ assert(data.count == dataCount)
+ val df = data.filter("id > 10")
+ df.cache
+ assert(df.count == dataCount - 11)
+ val df1 = df.filter("id > 11")
+ df1.cache
+ assert(df1.count == dataCount - 12)
+ df1
--- End diff --
The function is called twice. So actually it is meant to refresh the cache
in first call. Since I will change the test to what you suggested
https://github.com/apache/spark/pull/17064#discussion_r103530085, we can get
rid of this confusing.
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