Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18771#discussion_r130226083
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/CacheManager.scala ---
@@ -114,13 +114,13 @@ class CacheManager extends Logging {
}
/**
- * Un-cache all the cache entries that refer to the given plan.
+ * Un-cache the cache entry that refers to the given plan.
*/
def uncacheQuery(spark: SparkSession, plan: LogicalPlan, blocking:
Boolean): Unit = writeLock {
val it = cachedData.iterator()
while (it.hasNext) {
val cd = it.next()
- if (cd.plan.find(_.sameResult(plan)).isDefined) {
+ if (plan.sameResult(cd.plan)) {
--- End diff --
This is by design. This is for avoiding to get the incorrect results. See
the original PR: https://github.com/apache/spark/pull/17097
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