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From cloud-fan <...@git.apache.org>
Subject [GitHub] spark pull request: [SPARK-10810] [SQL] Improve session management...
Date Fri, 02 Oct 2015 21:35:03 GMT
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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