9 Answered Questions
[SOLVED] How to select the first row of each group?
- 2015-11-23 18:49:25
- Rami
- 77804 View
- 122 Score
- 9 Answer
- Tags: sql scala apache-spark dataframe apache-spark-sql
9 Answered Questions
[SOLVED] How to pivot Spark DataFrame?
- 2015-05-14 18:42:41
- J Calbreath
- 39183 View
- 51 Score
- 9 Answer
- Tags: scala apache-spark dataframe apache-spark-sql pivot
8 Answered Questions
[SOLVED] What are all the uses of an underscore in Scala?
- 2011-11-03 19:43:45
- Ivan
- 131177 View
- 512 Score
- 8 Answer
- Tags: scala
7 Answered Questions
7 Answered Questions
[SOLVED] Resolving dependency problems in Apache Spark
- 2016-12-29 16:21:31
- user7337271
- 10011 View
- 30 Score
- 7 Answer
- Tags: java scala apache-spark classnotfoundexception nosuchmethoderror
11 Answered Questions
[SOLVED] How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
- 2009-07-07 19:03:38
- Daniel C. Sobral
- 71746 View
- 366 Score
- 11 Answer
- Tags: scala type-erasure
2 Answered Questions
[SOLVED] Where does Scala look for implicits?
- 2011-04-08 16:29:37
- Daniel C. Sobral
- 43730 View
- 389 Score
- 2 Answer
- Tags: scala implicit-conversion implicits
3 Answered Questions
[SOLVED] Querying Spark SQL DataFrame with complex types
- 2015-02-04 22:12:38
- dvir
- 48042 View
- 54 Score
- 3 Answer
- Tags: sql scala apache-spark dataframe apache-spark-sql
4 Answered Questions
[SOLVED] How to query JSON data column using Spark DataFrames?
- 2015-12-03 15:03:22
- JDesuv
- 40299 View
- 36 Score
- 4 Answer
- Tags: scala apache-spark dataframe apache-spark-sql spark-cassandra-connector
8 Answered Questions
[SOLVED] How to store custom objects in Dataset?
- 2016-04-15 13:11:07
- zero323
- 58060 View
- 132 Score
- 8 Answer
- Tags: scala apache-spark apache-spark-dataset apache-spark-encoders
4 Answered Questions
[SOLVED] Scala 2.8 breakOut
- 2009-11-11 14:53:23
- oxbow_lakes
- 33398 View
- 223 Score
- 4 Answer
- Tags: scala scala-2.8 scala-collections
1 Answered Questions
10 Answered Questions
[SOLVED] Write to multiple outputs by key Spark - one Spark job
- 2014-06-02 12:54:11
- samthebest
- 62106 View
- 62 Score
- 10 Answer
- Tags: scala hadoop output hdfs apache-spark
6 Answered Questions
[SOLVED] Task not serializable: java.io.NotSerializableException when calling function outside closure only on classes not objects
- 2014-03-23 15:22:49
- Nimrod007
- 150849 View
- 211 Score
- 6 Answer
- Tags: scala serialization apache-spark typesafe
4 Answered Questions
[SOLVED] What does `:_*` (colon underscore star) do in Scala?
- 2011-05-18 21:35:51
- amorfis
- 41472 View
- 186 Score
- 4 Answer
- Tags: scala pattern-matching
8 Answered Questions
[SOLVED] What is the formal difference in Scala between braces and parentheses, and when should they be used?
- 2010-12-08 09:53:03
- Jean-Philippe Pellet
- 42711 View
- 317 Score
- 8 Answer
- Tags: scala syntax parentheses braces
1 Answered Questions
[SOLVED] Scala: What is a TypeTag and how do I use it?
- 2012-08-31 15:43:27
- Sergey Weiss
- 65488 View
- 355 Score
- 1 Answer
- Tags: scala types scala-2.10 reification
11 Answered Questions
4 Answered Questions
[SOLVED] Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
- 2009-03-19 17:46:16
- oxbow_lakes
- 30376 View
- 146 Score
- 4 Answer
- Tags: generics scala covariance contravariance
9 Answered Questions
[SOLVED] What is Scala's yield?
- 2009-06-27 09:18:56
- Geo
- 116434 View
- 307 Score
- 9 Answer
- Tags: scala functional-programming yield
15 Answered Questions
[SOLVED] How to define "type disjunction" (union types)?
- 2010-08-18 00:40:41
- Aaron Novstrup
- 41022 View
- 175 Score
- 15 Answer
- Tags: scala
4 Answered Questions
[SOLVED] What do <:<, <%<, and =:= mean in Scala 2.8, and where are they documented?
- 2010-08-06 20:03:25
- Jeff
- 26338 View
- 195 Score
- 4 Answer
- Tags: scala scala-2.8 type-constraints
4 Answered Questions
[SOLVED] What is a "context bound" in Scala?
- 2010-06-05 22:01:45
- Jesper
- 28066 View
- 108 Score
- 4 Answer
- Tags: scala scala-2.8 context-bound
14 Answered Questions
[SOLVED] Case objects vs Enumerations in Scala
- 2009-12-14 04:33:08
- Alex Miller
- 104946 View
- 225 Score
- 14 Answer
- Tags: scala enumeration case-class
4 Answered Questions
[SOLVED] What's the difference between => , ()=>, and Unit=>
- 2010-12-28 02:14:58
- Malvolio
- 23071 View
- 144 Score
- 4 Answer
- Tags: scala
9 Answered Questions
[SOLVED] Write single CSV file using spark-csv
- 2015-07-28 11:08:20
- user1735076
- 161962 View
- 89 Score
- 9 Answer
- Tags: scala csv apache-spark spark-csv
10 Answered Questions
[SOLVED] How to convert rdd object to dataframe in spark
- 2015-04-01 05:38:33
- user568109
- 234936 View
- 127 Score
- 10 Answer
- Tags: scala apache-spark apache-spark-sql rdd
7 Answered Questions
3 Answered Questions
[SOLVED] How does HashPartitioner work?
- 2015-07-15 07:46:38
- Sohaib
- 30105 View
- 77 Score
- 3 Answer
- Tags: scala apache-spark rdd partitioning
