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Parquet to arrow java converter -
Arrow - [mail # dev]
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| ...This definitely sounds like a useful tool. It seems like Julien startedsome of work in Parquet-arrow a while back.Julien, I am wondering what's your thoughts on whether such code shouldlive ... |
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Author: Li Jin
, 2018-03-06, 20:18
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Welcoming some new committers -
Spark - [mail # dev]
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| ...Congrats!On Fri, Mar 2, 2018 at 5:49 PM Holden Karau wrote:> Congratulations and welcome everyone! So excited to see the project grow> our committer base.>> On Mar 2, 2018 ... |
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Author: Li Jin
, 2018-03-02, 22:53
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Java implementation of MapType -
Arrow - [mail # dev]
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| ...Brian,I think it's ok to implement MapVector now.On Wed, Feb 21, 2018 at 12:07 PM, Bryan Cutler wrote:> I can't make the sync today, but I did want to ask if everyone is ok with>... |
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Author: Li Jin
, 2018-02-22, 15:01
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[ARROW-1815] [Java] Rename MapVector to StructVector -
Arrow - [issue]
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[ANNOUNCE] New Arrow committers -
Arrow - [mail # dev]
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| ...Congrats!On Wed, Feb 14, 2018 at 12:14 PM, Philipp Moritz wrote:> Congrats to the new committers!>> On Wed, Feb 14, 2018 at 9:07 AM, Robert Nishihara <> [EMAIL PROTECTED... |
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Author: Li Jin
, 2018-02-14, 17:23
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[SPARK-23360] SparkSession.createDataFrame timestamps can be incorrect with non-Arrow codepath -
Spark - [issue]
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| ...import datetimeimport pandas as pdimport osdt = [datetime.datetime(2015, 10, 31, 22, 30)]pdf = pd.DataFrame({'time': dt})os.environ['TZ'] = 'America/New_York'df1 = spark.createDataFrame(pdf)... |
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[DISCUSS] Union Vector -
Arrow - [mail # dev]
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| ...Hi All,I'd like to bump this thread for more discussion.There is current a Java PR to make the current union type match the spec:https://github.com/apache/arrow/pull/987. Since there is a ne... |
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Author: Li Jin
, 2018-02-08, 15:41
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[DISCUSS] Union Vector - Arrow - [mail # dev]
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| ...Hi All,I'd like to bump this thread to get some more feedbacks from other people.I think what Wes says makes sense, there seems to be two requirement forunion types and it might make sense t... |
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Author: Li Jin ,
2018-01-25, 16:56
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[DISCUSS] Union Vector - Arrow - [mail # dev]
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| ...Hi All,Here is a summary of the state and issue of union vector (to the best of myknowledge).I have summarized some possible solutions based on the discussion so far.However, this is not a p... |
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Author: Li Jin ,
2018-01-11, 16:17
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Spark DataFrame <--> Arrow Roundtrip -
Arrow - [mail # dev]
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| ...Hi Michael,Please see my comments inline.Keep in mind these are all pretty internal APIs so they might change in thefuture.On Mon, Feb 5, 2018 at 11:30 AM, Michael Shtelma wrote:> H... |
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Author: Li Jin
, 2018-02-06, 16:19
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Arrow PR backlog: please help -
Arrow - [mail # dev]
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| ...I just took a look at the Java issues,I have reviewed all of those to the extent I can, however, most of themneed input from other Java committers in order to merge or move forward.Please le... |
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Author: Li Jin
, 2018-02-01, 19:33
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[SPARK-23302] Refactor group aggregate pandas UDF to its own catalyst rules -
Spark - [issue]
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| ...Per discussion on https://github.com/apache/spark/pull/19872#discussion_r165220142We should try to refactor group aggregate pandas UDF to its own catalyst rules... |
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