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[SPARK-24759] No reordering keys for broadcast hash join - Spark - [issue]
...As the implementation of the broadcast hash join is independent of the input hash partitioning, reordering keys is not necessary. Thus, we solve this issue by simply removing the broadcast h...
http://issues.apache.org/jira/browse/SPARK-24759    Author: Xiao Li , 2018-07-09, 21:53
[SPARK-24796] Support GROUPED_AGG_PANDAS_UDF in Pivot - Spark - [issue]
...Currently, Grouped AGG PandasUDF is not supported in Pivot. It is nice to support it. # create input dataframefrom pyspark.sql import Rowdata = [  Row(id=123, total=200.0, qty=3, name='...
http://issues.apache.org/jira/browse/SPARK-24796    Author: Xiao Li , 2018-07-18, 14:31
[SPARK-23936] High-order function: map_concat(map1<K, V>, map2<K, V>, ..., mapN<K, V>) → map<K,V> - Spark - [issue]
...Ref:  https://prestodb.io/docs/current/functions/map.htmlReturns the union of all the given maps. If a key is found in multiple given maps, that key’s value in the resulting map comes f...
http://issues.apache.org/jira/browse/SPARK-23936    Author: Xiao Li , 2018-07-09, 12:23
[SPARK-24741] Have a built-in AVRO data source implementation - Spark - [issue]
...Apache Avro (https://avro.apache.org) is a data serialization format. It is widely used in the Spark and Hadoop ecosystem, especially for Kafka-based data pipelines. Using Spark-Avro package...
http://issues.apache.org/jira/browse/SPARK-24741    Author: Xiao Li , 2018-07-13, 15:55
[SPARK-23868] Fix scala.MatchError in literals.sql.out - Spark - [issue]
...To fix scala.MatchError in literals.sql.out, https://github.com/apache/spark/pull/20872 added an entry for CalendarIntervalType in QueryExecution.toHiveStructString....
http://issues.apache.org/jira/browse/SPARK-23868    Author: Xiao Li , 2018-04-04, 17:07
[SPARK-19128] Refresh Metadata Cache After ALTER TABLE SET LOCATION - Spark - [issue]
...ALTER TABLE SET LOCATION is missing refresh table cache.      val catalog = spark.sessionState.catalog      sql("CREATE TABLE tab1 using parquet AS SELECT 1 as ...
http://issues.apache.org/jira/browse/SPARK-19128    Author: Xiao Li , 2018-04-02, 22:16
[SPARK-24867] Add AnalysisBarrier to DataFrameWriter - Spark - [issue]
...      val udf1 = udf({(x: Int, y: Int) => x + y})      val df = spark.range(0, 3).toDF("a")        .withColumn("b", udf1($"a", udf1($"a",...
http://issues.apache.org/jira/browse/SPARK-24867    Author: Xiao Li , 2018-07-26, 01:36
[SPARK-24070] TPC-DS Performance Tests for Parquet 1.10.0 Upgrade - Spark - [issue]
...TPC-DS performance evaluation of Apache Spark Parquet 1.8.2 and 1.10.0....
http://issues.apache.org/jira/browse/SPARK-24070    Author: Xiao Li , 2018-07-17, 18:32
[SPARK-24071] Micro-benchmark of Parquet Filter Pushdown - Spark - [issue]
...Need a micro-benchmark suite for Parquet filter pushdown...
http://issues.apache.org/jira/browse/SPARK-24071    Author: Xiao Li , 2018-07-17, 18:34
[SPARK-23902] Provide an option in months_between UDF to disable rounding-off - Spark - [issue]
...https://issues.apache.org/jira/browse/HIVE-15511Rounding off was added in {{GenericUDFMonthsBetween}} so that it can be compatible with systems like oracle. However, there are places where r...
http://issues.apache.org/jira/browse/SPARK-23902    Author: Xiao Li , 2018-04-26, 03:19