DaveDeCaprio commented on a change in pull request #24028: [SPARK-26917][SQL]
Further reduce locks in CacheManager
URL: https://github.com/apache/spark/pull/24028#discussion_r265142932
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/CacheManager.scala
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@@ -72,12 +71,12 @@ class CacheManager extends Logging {
/** Clears all cached tables. */
def clearCache(): Unit = writeLock {
-
cachedData.asScala.foreach(_.cachedRepresentation.cacheBuilder.clearCache())
- cachedData.clear()
+ cachedData.foreach(_.cachedRepresentation.cacheBuilder.clearCache())
+ cachedData = IndexedSeq[CachedData]()
}
/** Checks if the cache is empty. */
- def isEmpty: Boolean = readLock {
Review comment:
So I reverted this back to the previous behavior.
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