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[SPARK-25465] Refactor Parquet test suites in project Hive - Spark - [issue]
...Current the file parquetSuites.scala( is n...    Author: Gengliang Wang , 2018-09-22, 16:46
[SPARK-25499] Refactor BenchmarkBase and Benchmark - Spark - [issue]
...Currently there are two classes with the same naming BenchmarkBase:1. org.apache.spark.util.BenchmarkBase2. org.apache.spark.sql.execution.benchmark.BenchmarkBaseHere I propose:1. the packag...    Author: Gengliang Wang , 2018-09-21, 14:21
[SPARK-24777] Add write benchmark for AVRO - Spark - [issue]    Author: Gengliang Wang , 2018-09-21, 00:42
[SPARK-24800] Refactor Avro Serializer and Deserializer - Spark - [issue]
...Currently in Avro data source module, the Avro Deserializer converts input Avro format data to Row, and then convert the Row to InternalRow. The Avro Serializer converts InternalRow to Row, ...    Author: Gengliang Wang , 2018-09-17, 16:02
[SPARK-24768] Have a built-in AVRO data source implementation - Spark - [issue]
...Apache Avro ( is a popular data serialization format. It is widely used in the Spark and Hadoop ecosystem, especially for Kafka-based data pipelines.  Using the exter...    Author: Gengliang Wang , 2018-09-17, 05:25
[SPARK-25313] Fix regression in FileFormatWriter output schema - Spark - [issue]
...In the follow example:        val location = "/tmp/t"        val df = spark.range(10).toDF("id")        df.write.format("parquet")...    Author: Gengliang Wang , 2018-09-11, 02:11
[SPARK-21979] Improve QueryPlanConstraints framework - Spark - [issue]
...Improve QueryPlanConstraints framework, make it robust and simple.In apache/spark#15319, constraints for expressions like a = f(b, c) is resolved.However, for expressions likea = f(b, c) &am...    Author: Gengliang Wang , 2018-09-09, 22:49
[SPARK-24771] Upgrade AVRO version from 1.7.7 to 1.8 - Spark - [issue]    Author: Gengliang Wang , 2018-09-06, 06:02
[SPARK-25305] Respect attribute name in `CollapseProject` and `ColumnPruning` - Spark - [issue]
...Currently in optimizer rule `CollapseProject`, the lower level project is collapsed into upper level, but the naming of alias in lower level is propagated in upper level.We should reserve al...    Author: Gengliang Wang , 2018-09-01, 16:43
[SPARK-24772] support reading AVRO logical types - Date - Spark - [issue]    Author: Gengliang Wang , 2018-08-23, 16:15