Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/8909#discussion_r41070271
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala ---
@@ -300,21 +303,25 @@ class SQLContext(@transient val sparkContext:
SparkContext)
* @group cachemgmt
* @since 1.3.0
*/
- def isCached(tableName: String): Boolean =
cacheManager.isCached(tableName)
+ def isCached(tableName: String): Boolean = {
+ cacheManager.lookupCachedData(table(tableName)).nonEmpty
+ }
/**
* Caches the specified table in-memory.
* @group cachemgmt
* @since 1.3.0
*/
- def cacheTable(tableName: String): Unit =
cacheManager.cacheTable(tableName)
+ def cacheTable(tableName: String): Unit = {
+ cacheManager.cacheQuery(this, table(tableName), Some(tableName))
+ }
/**
* Removes the specified table from the in-memory cache.
* @group cachemgmt
* @since 1.3.0
*/
- def uncacheTable(tableName: String): Unit =
cacheManager.uncacheTable(tableName)
+ def uncacheTable(tableName: String): Unit =
cacheManager.uncacheQuery(table(tableName))
--- End diff --
We can also add `cacheQuery` here so that we don't need to pass in a
`SQLContext` every time we call `CacheManager.cacheQuery `
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