Recent questions tagged scala

0 votes

1 answer 423 views

scala - how to filter out a null value from spark dataframe

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 302 views

scala - How to set heap size for sbt?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 224 views

scala - How to write unit tests in Spark 2.0+?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 272 views

scala - How to create SBT project with IntelliJ Idea?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 509 views

scala - @karate How to pass parameter to a feature file in gatling simulation class?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 248 views

scala - Apache Spark how to append new column from list/array to Spark dataframe

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 386 views

scala - How to get ClassTag form TypeTag, or both at same time?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 238 views

scala - Why doesn't Array's == function return true for Array(1,2) == Array(1,2)?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 300 views

scala - Why can't I return a concrete subtype of A if a generic subtype of A is declared as return parameter?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 364 views

scala - call of distinct and map together throws NPE in spark library

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 369 views

scala - How do I make a function involving futures tail recursive?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 295 views

scala - Explanation of fold method of spark RDD

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 250 views

scala - How to get path to the uploaded file

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 234 views

scala - What are the rules to govern underscore to define anonymous function?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 1.2k views

scala - Result type of an implicit conversion must be more specific than AnyRef

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 365 views

scala - No Json serializer as JsObject found for type play.api.libs.json.JsObject

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 333 views

scala - Is there a way to control which implicit conversion will be the default used?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 322 views

scala - What is going wrong with `unionAll` of Spark `DataFrame`?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 258 views

scala - Run custom task automatically before/after standard task

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 442 views

scala - How to convert unix timestamp to date in Spark

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 619 views

scala - Cartesian product of two lists

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 651 views

scala - How to use Column.isin with list?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 439 views

scala - Better way to convert a string field into timestamp in Spark

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 333 views

scala - Syntax sugar: _* for treating Seq as method parameters

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 229 views

scala - Stackoverflow due to long RDD Lineage

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 240 views

scala - java.io.IOException: Could not locate executable nullinwinutils.exe in the Hadoop binaries. spark Eclipse on windows 7

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 270 views

scala - how do I get sbt to use a local maven proxy repository (Nexus)?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 387 views

scala - Shuffle a list of integers with Java 8 Streams API

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 187 views

scala - Customize SparkContext using sparkConf.set(..) when using spark-shell

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 367 views

scala - How to define a custom aggregation function to sum a column of Vectors?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 173 views

scala - Setting up sbt to use Java 7 for compilation?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 350 views

scala - how to convert json string to dataframe on spark

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 170 views

scala - DataFrame-ified zipWithIndex

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 650 views

scala - Get field names list from case class

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1 answer 197 views

scala - Spark: what's the best strategy for joining a 2-tuple-key RDD with single-key RDD?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Just Browsing Browsing

Most popular tags