Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/17064#discussion_r103528104 --- 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 + } + + withTempDir { dir => + val path = dir.getPath() --- End diff -- we usually call `dir.getCanonicalPath`
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