9 Answered Questions
[SOLVED] How to select the first row of each group?
- 2015-11-23 18:49:25
- Rami
- 65854 View
- 105 Score
- 9 Answer
- Tags: sql scala apache-spark dataframe apache-spark-sql
8 Answered Questions
[SOLVED] What are all the uses of an underscore in Scala?
- 2011-11-03 19:43:45
- Ivan
- 123119 View
- 485 Score
- 8 Answer
- Tags: scala
6 Answered Questions
[SOLVED] How to pivot DataFrame?
- 2015-05-14 18:42:41
- J Calbreath
- 30116 View
- 39 Score
- 6 Answer
- Tags: scala apache-spark dataframe apache-spark-sql pivot
7 Answered Questions
[SOLVED] Resolving dependency problems in Apache Spark
- 2016-12-29 16:21:31
- user7337271
- 7790 View
- 27 Score
- 7 Answer
- Tags: java scala apache-spark classnotfoundexception nosuchmethoderror
7 Answered Questions
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
- 69919 View
- 362 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
- 42354 View
- 381 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
- 41209 View
- 48 Score
- 3 Answer
- Tags: sql scala apache-spark dataframe apache-spark-sql
4 Answered Questions
[SOLVED] Scala 2.8 breakOut
- 2009-11-11 14:53:23
- oxbow_lakes
- 32481 View
- 220 Score
- 4 Answer
- Tags: scala scala-2.8 scala-collections
4 Answered Questions
[SOLVED] How to query JSON data column using Spark DataFrames?
- 2015-12-03 15:03:22
- JDesuv
- 30613 View
- 31 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
- 50441 View
- 125 Score
- 8 Answer
- Tags: scala apache-spark apache-spark-dataset apache-spark-encoders
1 Answered Questions
10 Answered Questions
[SOLVED] Write to multiple outputs by key Spark - one Spark job
- 2014-06-02 12:54:11
- samthebest
- 57978 View
- 58 Score
- 10 Answer
- Tags: scala hadoop output hdfs apache-spark
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
- 39575 View
- 305 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
- 62811 View
- 350 Score
- 1 Answer
- Tags: scala types scala-2.10 reification
3 Answered Questions
[SOLVED] What does `:_*` (colon underscore star) do in Scala?
- 2011-05-18 21:35:51
- amorfis
- 38215 View
- 171 Score
- 3 Answer
- Tags: scala pattern-matching
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
- 136297 View
- 197 Score
- 6 Answer
- Tags: scala serialization apache-spark typesafe
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
- 29919 View
- 145 Score
- 4 Answer
- Tags: generics scala covariance contravariance
9 Answered Questions
[SOLVED] What is Scala's yield?
- 2009-06-27 09:18:56
- Geo
- 113619 View
- 302 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
- 37894 View
- 171 Score
- 15 Answer
- Tags: scala
3 Answered Questions
[SOLVED] What's the difference between => , ()=>, and Unit=>
- 2010-12-28 02:14:58
- Malvolio
- 21693 View
- 137 Score
- 3 Answer
- Tags: scala
8 Answered Questions
[SOLVED] Write single CSV file using spark-csv
- 2015-07-28 11:08:20
- user1735076
- 128274 View
- 81 Score
- 8 Answer
- Tags: scala csv apache-spark spark-csv
4 Answered Questions
14 Answered Questions
[SOLVED] Case objects vs Enumerations in Scala
- 2009-12-14 04:33:08
- Alex Miller
- 100875 View
- 219 Score
- 14 Answer
- Tags: scala enumeration case-class
4 Answered Questions
[SOLVED] What is a "context bound" in Scala?
- 2010-06-05 22:01:45
- Jesper
- 27359 View
- 102 Score
- 4 Answer
- Tags: scala scala-2.8 context-bound
3 Answered Questions
[SOLVED] How does HashPartitioner work?
- 2015-07-15 07:46:38
- Sohaib
- 26615 View
- 70 Score
- 3 Answer
- Tags: scala apache-spark rdd partitioning
14 Answered Questions
2 Answered Questions
[SOLVED] Spark 2.0 Dataset vs DataFrame
- 2016-11-14 19:44:36
- Georg Heiler
- 3742 View
- 22 Score
- 2 Answer
- Tags: scala apache-spark apache-spark-sql apache-spark-dataset apache-spark-2.0
16 Answered Questions
[SOLVED] Call by name vs call by value in Scala, clarification needed
- 2012-11-12 01:33:14
- JAM
- 74364 View
- 213 Score
- 16 Answer
- Tags: scala