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DataSourceV2 : Transactional Write support - Spark - [mail # dev]
...I agree with the temp table approach. One idea is: maybe we only need onetemp table, and each task writes to this temp table. At the end we read thedata from the temp table and write it to t...
   Author: Wenchen Fan , 2019-08-06, 02:40
[SPARK-28344] fail the query if detect ambiguous self join - Spark - [issue]
http://issues.apache.org/jira/browse/SPARK-28344    Author: Wenchen Fan , 2019-08-06, 02:11
[expand - 6 more] - [Discuss] Follow ANSI SQL on table insertion - Spark - [mail # dev]
...Ryan, I agree that it needs a VOTE to decide the most reasonable defaultsetting. But what shall we do for Spark 3.0 if there is no more progress onthis project anymore(just assume)?In the ma...
   Author: Wenchen Fan , 2019-08-05, 18:07
[SPARK-28155] do not leak SaveMode to file source v2 - Spark - [issue]
...Currently there is a hack in `DataFrameWriter`, which passes `SaveMode` to file source v2. This should be removed and file source v2 should not accept SaveMode....
http://issues.apache.org/jira/browse/SPARK-28155    Author: Wenchen Fan , 2019-07-29, 15:23
Re: How to force sorted merge join to broadcast join - Spark - [mail # dev]
...You can try EXPLAIN COST query and see if it works for you.On Mon, Jul 29, 2019 at 5:34 PM Rubén Berenguel wrote:> I think there is no way of doing that (at least don't remember one right...
   Author: Wenchen Fan , 2019-07-29, 10:07
[SPARK-28301] fix the behavior of table name resolution with multi-catalog - Spark - [issue]
http://issues.apache.org/jira/browse/SPARK-28301    Author: Wenchen Fan , 2019-07-24, 07:32
[SPARK-28346] clone the query plan between analyzer, optimizer and planner - Spark - [issue]
http://issues.apache.org/jira/browse/SPARK-28346    Author: Wenchen Fan , 2019-07-23, 16:06
DataSourceV2 sync notes - 10 July 2019 - Spark - [mail # dev]
...Hi Ryan,Thanks for summarizing and sending out the meeting notes! Unfortunately, Imissed the last sync, but the topics are really interesting, especially thestats integration.The ideal solut...
   Author: Wenchen Fan , 2019-07-23, 10:30
[SPARK-28458] CLONE - do not leak SaveMode to file source v2 - Spark - [issue]
...Currently there is a hack in `DataFrameWriter`, which passes `SaveMode` to file source v2. This should be removed and file source v2 should not accept SaveMode....
http://issues.apache.org/jira/browse/SPARK-28458    Author: Wenchen Fan , 2019-07-20, 07:38
[SPARK-27106] merge CaseInsensitiveStringMap and DataSourceOptions - Spark - [issue]
http://issues.apache.org/jira/browse/SPARK-27106    Author: Wenchen Fan , 2019-07-17, 02:42