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[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 , 2020-09-27, 11:30
[SPARK-32969] Spark Submit process not exiting after session.stop() - Spark - [issue]
...Exactly 3 spark submit processes are hanging from the first 3 jobs that were submitted to the standalone cluster using client mode. Example from the client:root 1517 0.3 4.7 8412728 1532876 ...    Author: El R , 2020-09-27, 09:26
[SPARK-32988] ExternalCatalog vs ExternalCatalogWithListener:  backward compatibility problem - Spark - [issue]
...With Spark 2.3 spark.sharedState.externalCatalog used to give an object of ExternalCatalog which was actually an instance of HiveExternalCatalogWith Spark 2.4 spark.sharedState.externalCatal...    Author: dinesh , 2020-09-27, 09:25
[SPARK-27640] Avoid duplicate lookups for datasource through provider - Spark - [issue]
...Spark SQL using code as follows to lookup datasource.DataSource.lookupDataSource(source, sparkSession.sqlContext.conf)But exists some duplicate call....    Author: jiaan.geng , 2020-09-27, 09:22
[SPARK-33008] Division by zero on divide-like operations returns incorrect result - Spark - [issue]
...Spark SQL:spark-sql> SELECT 1/0;NULLTime taken: 3.002 seconds, Fetched 1 row(s)PostgreSQL:postgres=# SELECT 1/0;ERROR:  division by zero...    Author: Lu Lu , 2020-09-27, 06:02
[SPARK-32852] spark.sql.hive.metastore.jars support HDFS location - Spark - [issue]
...It would be great if spark.sql.hive.metastore.jars supports HDFS location. The cluster mode will be very convenient....    Author: Yuming Wang , 2020-09-27, 04:23
[SPARK-32974] FeatureHasher transform optimization - Spark - [issue]
...for a numerical column, its output index is a hash of its col_name, we can pre-compute it at first, instead of computing it on each row....    Author: zhengruifeng , 2020-09-27, 01:35
[SPARK-33007] Optimize to_json + named_struct + from_json expression chain - Spark - [issue]
...Due to query optimization, it is possibly to generate inefficient json expression chain like to_json(named_struct(col1, from_json(json).col1, col2, from_json(json).col2), ....). We could opt...    Author: L. C. Hsieh , 2020-09-26, 23:53
[SPARK-32997] Support dynamic PVC creation/deletion for K8s driver - Spark - [issue]    Author: Dongjoon Hyun , 2020-09-26, 23:50
[SPARK-33006] Add dynamic PVC usage example into K8s doc - Spark - [issue]    Author: Dongjoon Hyun , 2020-09-26, 23:44