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[SPARK-33037] Add "spark.shuffle.manager" value to knownManagers - Spark - [issue]
...Spark has a hardcode list to contain known shuffle managers, which has two values now. It does not contain user's custom shuffle manager which is set through Spark config "spark.shuffle.mana...    Author: BoYang , 2020-09-30, 17:17
[SPARK-33006] Add dynamic PVC usage example into K8s doc - Spark - [issue]    Author: Dongjoon Hyun , 2020-09-30, 16:28
[SPARK-32989] Performance regression when selecting from str_to_map - Spark - [issue]
...When I create a map using str_to_map and select more than a single value, I notice a notable performance regression in 3.0.1 compared to 2.4.7. When selecting a single value, the performance...    Author: Ondrej Kokes , 2020-09-30, 13:49
[SPARK-33036] Refactor RewriteCorrelatedScalarSubquery code to replace exprIds in a bottom-up manner - Spark - [issue]
...This PR aims at refactoring code in `RewriteCorrelatedScalarSubquery` for replacing `ExprId`s in a bottom-up manner instead of doing in a top-down one.This PR comes from the talk with @cloud...    Author: Takeshi Yamamuro , 2020-09-30, 13:21
[SPARK-32741] Check if the same ExprId refers to the unique attribute in logical plans - Spark - [issue]
...Some plan transformations (e.g., `RemoveNoopOperators`) implicitly assume the same `ExprId` refers to the unique attribute. But, `RuleExecutor` does not check this integrity between logical ...    Author: Takeshi Yamamuro , 2020-09-30, 12:38
[SPARK-33034] Support ALTER TABLE in JDBC v2 Table Catalog: add, update type and nullability of columns (Oracle dialect) - Spark - [issue]
...Override the default SQL strings for: ALTER TABLE ADD COLUMN ALTER TABLE UPDATE COLUMN TYPE ALTER TABLE UPDATE COLUMN NULLABILITYin the following Oracle JDBC dialect according to official do...    Author: Maxim Gekk , 2020-09-30, 12:36
[SPARK-33035] Updates the obsoleted entries of attribute mapping in QueryPlan#transformUpWithNewOutput - Spark - [issue]
...This ticket aims at fixing corner-case bugs in the `QueryPlan#transformUpWithNewOutput` that is used to propagate updated `ExprId`s in a bottom-up way. Let's say we have a rule to simply ass...    Author: Takeshi Yamamuro , 2020-09-30, 12:24
[SPARK-32901] UnsafeExternalSorter may cause a SparkOutOfMemoryError to be thrown while spilling - Spark - [issue]
...Consider the following sequence of events: UnsafeExternalSorter runs out of space in its pointer array and attempts to allocate a large array to replace the current one. TaskMemoryManager tr...    Author: Tom van Bussel , 2020-09-30, 11:25
[SPARK-33023] addJar use `Utils.isWindow` to judge windows system - Spark - [issue]
...addJar use `Utils.isWindow` to judge windows system...    Author: angerszhu , 2020-09-30, 08:40
[SPARK-33033] Display time series view for task metrics in history server - Spark - [issue]
...Event log contains all tasks' metrics data, which are useful for performance debugging. By now spark UI only displays final aggregation results, much information is hidden by this way. If sp...    Author: Zhen Li , 2020-09-30, 08:31