cloud-fan commented on a change in pull request #31364:
URL: https://github.com/apache/spark/pull/31364#discussion_r565365100
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File path:
sql/core/src/main/scala/org/apache/spark/sql/internal/CatalogImpl.scala
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@@ -515,14 +515,19 @@ class CatalogImpl(sparkSession: SparkSession) extends
Catalog {
}
/**
- * Invalidates and refreshes all the cached data and metadata of the given
table or view.
- * For Hive metastore table, the metadata is refreshed. For data source
tables, the schema will
- * not be inferred and refreshed.
+ * The method fully refreshes a table or view with the given name including:
+ * 1. The relation cache in the session catalog. The method remove table
entry from the cache.
+ * 2. The file indexes of all relations used by the given view.
+ * 3. Table/View schema in the Hive Metastore if the SQL config
+ * `spark.sql.hive.caseSensitiveInferenceMode` is set to
`INFER_AND_SAVE`.
+ * 4. Cached data of the given table or view, and all its dependents that
refer to it.
+ * Cached data is cleared while keeping the table/view and all its
dependents are cached.
Review comment:
`keeping ... are cached` -> `keeping ... as cached`
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