7 Answered Questions
[SOLVED] How to select the first row of each group?
- 2015-11-23 18:49:25
- Rami
- 47534 View
- 80 Score
- 7 Answer
- Tags: scala apache-spark apache-spark-sql spark-dataframe
8 Answered Questions
[SOLVED] What are all the uses of an underscore in Scala?
- 2011-11-03 19:43:45
- Ivan
- 108879 View
- 427 Score
- 8 Answer
- Tags: scala
6 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
- 66393 View
- 352 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
- 39188 View
- 370 Score
- 2 Answer
- Tags: scala implicit-conversion implicits
6 Answered Questions
[SOLVED] How to pivot Spark DataFrame?
- 2015-05-14 18:42:41
- J Calbreath
- 20139 View
- 30 Score
- 6 Answer
- Tags: scala apache-spark dataframe pivot apache-spark-sql
5 Answered Questions
[SOLVED] Resolving dependency problems in Apache Spark
- 2016-12-29 16:21:31
- user7337271
- 4343 View
- 19 Score
- 5 Answer
- Tags: java scala maven apache-spark sbt
4 Answered Questions
[SOLVED] Scala 2.8 breakOut
- 2009-11-11 14:53:23
- oxbow_lakes
- 31095 View
- 216 Score
- 4 Answer
- Tags: scala scala-2.8 scala-collections
3 Answered Questions
[SOLVED] Querying Spark SQL DataFrame with complex types
- 2015-02-04 22:12:38
- dvir
- 31075 View
- 30 Score
- 3 Answer
- Tags: scala apache-spark dataframe apache-spark-sql spark-dataframe
1 Answered Questions
10 Answered Questions
[SOLVED] Write to multiple outputs by key Spark - one Spark job
- 2014-06-02 12:54:11
- samthebest
- 51055 View
- 55 Score
- 10 Answer
- Tags: scala hadoop output hdfs apache-spark
6 Answered Questions
[SOLVED] How to store custom objects in Dataset?
- 2016-04-15 13:11:07
- zero323
- 37095 View
- 102 Score
- 6 Answer
- Tags: scala apache-spark apache-spark-dataset
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
- 34784 View
- 276 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
- 57386 View
- 335 Score
- 1 Answer
- Tags: scala types scala-2.10 reification
11 Answered Questions
9 Answered Questions
[SOLVED] What is Scala's yield?
- 2009-06-27 09:18:56
- Geo
- 108715 View
- 285 Score
- 9 Answer
- Tags: scala functional-programming yield
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
- 115188 View
- 167 Score
- 6 Answer
- Tags: scala serialization apache-spark typesafe
3 Answered Questions
[SOLVED] What does `:_*` (colon underscore star) do in Scala?
- 2011-05-18 21:35:51
- amorfis
- 32743 View
- 151 Score
- 3 Answer
- Tags: scala pattern-matching
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
- 29225 View
- 141 Score
- 4 Answer
- Tags: generics scala covariance contravariance
15 Answered Questions
[SOLVED] How to define "type disjunction" (union types)?
- 2010-08-18 00:40:41
- Aaron Novstrup
- 32739 View
- 161 Score
- 15 Answer
- Tags: scala
3 Answered Questions
[SOLVED] How to query JSON data column using Spark DataFrames?
- 2015-12-03 15:03:22
- JDesuv
- 19132 View
- 14 Score
- 3 Answer
- Tags: scala apache-spark apache-spark-sql spark-dataframe spark-cassandra-connector
4 Answered Questions
13 Answered Questions
[SOLVED] Case objects vs Enumerations in Scala
- 2009-12-14 04:33:08
- Alex Miller
- 93275 View
- 208 Score
- 13 Answer
- Tags: scala enumeration case-class
2 Answered Questions
[SOLVED] What's the difference between => , ()=>, and Unit=>
- 2010-12-28 02:14:58
- Malvolio
- 18954 View
- 133 Score
- 2 Answer
- Tags: scala
4 Answered Questions
[SOLVED] What is a "context bound" in Scala?
- 2010-06-05 22:01:45
- Jesper
- 26010 View
- 102 Score
- 4 Answer
- Tags: scala scala-2.8 context-bound
12 Answered Questions
3 Answered Questions
[SOLVED] How does HashPartitioner work?
- 2015-07-15 07:46:38
- Sohaib
- 20065 View
- 56 Score
- 3 Answer
- Tags: scala apache-spark rdd partitioning
10 Answered Questions
[SOLVED] How to convert rdd object to dataframe in spark
- 2015-04-01 05:38:33
- user568109
- 161900 View
- 92 Score
- 10 Answer
- Tags: scala apache-spark spark-dataframe rdd
7 Answered Questions
5 Answered Questions
[SOLVED] Does the JVM prevent tail call optimizations?
- 2008-09-19 21:35:35
- Jason Dagit
- 23677 View
- 95 Score
- 5 Answer
- Tags: java jvm scala tail-recursion
