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[SPARK-31288] Reduce calls to requireDbExists and requireTableExists - Spark - [issue]    Author: Yuming Wang , 2020-03-29, 18:56
[SPARK-31281] Hit OOM Error - GC Limit - Spark - [issue]
...MemoryStore is 2.6GBconf = new SparkConf().setAppName("test") //.set("spark.sql.codegen.wholeStage", "false") .set("", "localhost") .set("spark.driver.memory"...    Author: HongJin , 2020-03-29, 18:54
[SPARK-31293] Fix wrong examples and help messages for Kinesis integration - Spark - [issue]
...There are some minor mistakes in the examples and the help messages for Kinesis integration. For example, KinesisWordCountASL.scala takes three arguments but its example is taking four, whil...    Author: Kengo Seki , 2020-03-29, 18:49
[SPARK-31296] Benchmark date-time rebasing in Parquet datasource - Spark - [issue]
...Add benchmarks for saving dates/timestamps to parquet when spark.sql.legacy.parquet.rebaseDateTime.enabled is set to true Add bechmark for loading dates/timestamps from parquet when rebasing...    Author: Maxim Gekk , 2020-03-29, 18:48
[SPARK-31270] Expose executor memory metrics at the task detal, in the Stages tab - Spark - [issue]    Author: angerszhu , 2020-03-29, 18:45
[SPARK-31298] validate CTAS table path in SPARK-19724 seems conflict and External table also need to check non-empty - Spark - [issue]
...In  SessionCatalog.validateTableLocation()val tableLocation =  new Path( in CreateDataSourceTableAsSelect , ta...    Author: angerszhu , 2020-03-29, 18:40
[SPARK-31219] YarnShuffleService doesn't close idle netty channel - Spark - [issue]
...Recently, we find our YarnShuffleService has a lot of half-open connections where shuffle servers' connections are active while clients have already closed. For example, from server's `ss -n...    Author: Manu Zhang , 2020-03-29, 18:40
[SPARK-31280] Perform propagating empty relation after RewritePredicateSubquery - Spark - [issue]
...scala> spark.sql(" select * from values(1), (2) t(key) where key in (select 1 as key where 1=0)").queryExecutionres15: org.apache.spark.sql.execution.QueryExecution === Parsed Logical Pla...    Author: Kent Yao , 2020-03-29, 18:32
[SPARK-31297] Speed-up date-time rebasing - Spark - [issue]
...I do believe it is possible to speed up date-time rebasing by building a map of micros to diffs between original and rebased micros. And look up at the map via binary search.For example, the...    Author: Maxim Gekk , 2020-03-29, 18:03
[SPARK-31283] Simplify ChiSq by adding a common method - Spark - [issue]
...The logic in 'chiSquaredDenseFeatures' and 'chiSquaredSparseFeatures' can be unified....    Author: zhengruifeng , 2020-03-29, 16:32