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Showing posts with label
scala
.
Show all posts
Showing posts with label
scala
.
Show all posts
Tuesday, 12 February 2019
How to select multiple columns from a spark data frame using List[String]
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Lets see how to select multiple columns from a spark data frame. Create Example DataFrame spark-shell --queue= *; To adjust logging...
28 comments:
Wednesday, 2 January 2019
How to add Scalastyle plugin in eclipse
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Scalastyle is a style checker for Scala. It checks your Scala code against a number of configurable rules, and marks the code which viola...
19 comments:
Thursday, 8 November 2018
How to do an aggregate function on a Spark Dataframe using collect_set
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In order to explain usage of collect_set, Lets create a Dataframe with 3 columns. spark-shell --queue= *; To adjust logging leve...
3 comments:
Friday, 26 October 2018
How to add multiple withColumn to Spark Dataframe
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In order to explain, Lets create a dataframe with 3 columns spark-shell --queue= *; To adjust logging level use sc.setLogL...
7 comments:
Saturday, 3 March 2018
Conditional Join in Spark using Dataframe
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Lets see how can we add conditions along with dataframe join in spark Say we have 2 dataframes: dataFrame1,dataFrame2 val dataFrame1 = ...
1 comment:
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