Spark Dataset is a strongly typed collection of objects mapped to a relational schema.
I'm just wondering what is the difference between an RDD and DataFrame (Spark 2.0.0 DataFrame is a mere type alias for …
dataframe apache-spark apache-spark-sql rdd apache-spark-datasetAccording to Introducing Spark Datasets: As we look forward to Spark 2.0, we plan some exciting improvements to Datasets, specifically: ... Custom …
scala apache-spark apache-spark-dataset apache-spark-encodersSpark 2.0 (final) with Scala 2.11.8. The following super simple code yields the compilation error Error:(17, 45) Unable to find encoder for type …
scala apache-spark apache-spark-dataset apache-spark-encodersI want to Change case of whole column to Lowercase in Spark Dataset Desired Input +------+--------------------+ |ItemID| Category name| +…
java apache-spark apache-spark-sql apache-spark-datasetI have written the code to access the Hive table using SparkSQL. Here is the code: SparkSession spark = SparkSession .builder() .…
java string apache-spark apache-spark-sql apache-spark-datasetDataset<Tweet> ds = sc.read().json("/path").as(Encoders.bean(Tweet.class)); Tweet class :- long id string …
apache-spark spark-dataframe apache-spark-datasetWhen I m trying to do the same thing in my code as mentioned below dataframe.map(row => { val …
scala apache-spark apache-spark-sql apache-spark-dataset apache-spark-encodersI'm just wondering what is the difference between an RDD and DataFrame (Spark 2.0.0 DataFrame is a mere type alias for …
apache-spark apache-spark-sql rdd apache-spark-datasetI am trying to use the Spark Dataset API but I am having some issues doing a simple join. Let's …
scala apache-spark apache-spark-sql apache-spark-datasetSpark Dataset 2.0 provides two functions createOrReplaceTempView and createGlobalTempView. I am not able to understand the basic difference between both functions. …
apache-spark apache-spark-dataset