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[SPARK-27834] Make separate PySpark/SparkR vectorization configurations - Spark - [issue]
...spark.sql.execution.arrow.enabled was added when we add PySpark arrow optimization.Later, in the current master, SparkR arrow optimization was added and it's controlled by the same configura...    Author: Hyukjin Kwon , 2019-05-24, 15:24
[SPARK-26759] Arrow optimization in SparkR's interoperability - Spark - [issue]
...Arrow 0.12.0 is release and it contains R API. We could optimize Spark DaraFrame <> R DataFrame interoperability.For instance see the examples below: dapply    df <- creat...    Author: Hyukjin Kwon , 2019-05-24, 15:23
[SPARK-16544] Support for conversion from compatible schema for Parquet data source when data types are not matched - Spark - [issue]
...This deals with scenario 1 - case - 1 from the parent issue....    Author: Hyukjin Kwon , 2019-05-24, 04:21
[expand - 8 more] - Resolving all JIRAs affecting EOL releases - Spark - [mail # dev]
...I took an action for those JIRAs.The JIRAs that has not been updated for the last year, and having affectversion of EOL releases were now:  - Resolved as 'Incomplete' status  - Has...
   Author: Hyukjin Kwon , 2019-05-21, 05:38
[SPARK-18246] Throws an exception before execution for unsupported types in Json, CSV and text functionailities - Spark - [issue]
...Case 1 - read.json(rdd)val rdd = spark.sparkContext.parallelize(1 to 100).map(i => s"""{"a": "str$i"}""")val schema = new StructType().add("a", CalendarIntervalType)    Author: Hyukjin Kwon , 2019-05-21, 04:36
[SPARK-18340] Inconsistent error messages in launching scripts and hanging in sparkr script for wrong options - Spark - [issue]
...It seems there are some problems with handling wrong options as below:*spark-submit script - this one looks finespark-submit --aabbccError: Unrecognized option: --aabbccUsage: spark-submit [...    Author: Hyukjin Kwon , 2019-05-21, 04:35
[SPARK-14800] Dealing with null as a value in options for each internal data source - Spark - [issue]
...This was found in, most of options in data sources throws NullPointerException when given value is null.For example, the codes below:sqlC...    Author: Hyukjin Kwon , 2019-05-21, 04:34
[SPARK-15143] CSV data source is not being tested as HadoopFsRelation - Spark - [issue]
...JSON, Parquet, Text and ORC are being tested with HadoopFsRelationTest by extending this.This includes 60ish tests. CSV is not being tested with this....    Author: Hyukjin Kwon , 2019-05-21, 04:33
[SPARK-20840] Misleading spurious errors when there are Javadoc (Unidoc) breaks - Spark - [issue]
...Currently, when there are Javadoc breaks, this seems printing warnings as errors.For example, the actual errors were as below in    Author: Hyukjin Kwon , 2019-05-21, 04:17
[SPARK-20938] explain() for datasources implementing CatalystScan does not show pushed predicates correctly - Spark - [issue]
...Actual pushed-down catalyst predicate expressions look not being represented correctly (but only sources filters) when we use a datasource implementing CatalystScan. For example, the below c...    Author: Hyukjin Kwon , 2019-05-21, 04:16