Spark-Scala | Spark program with

 by   ljcan Scala Version: Current License: No License

kandi X-RAY | Spark-Scala Summary

kandi X-RAY | Spark-Scala Summary

Spark-Scala is a Scala library typically used in Big Data, Spark applications. Spark-Scala has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Spark program with scala:MLlib基本数据类型的使用;MLlib提供的数理统计方法的使用;机器学习算法Demo
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              Spark-Scala has a low active ecosystem.
              It has 11 star(s) with 10 fork(s). There are 5 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 1 open issues and 0 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of Spark-Scala is current.

            kandi-Quality Quality

              Spark-Scala has no bugs reported.

            kandi-Security Security

              Spark-Scala has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              Spark-Scala does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
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              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              Spark-Scala releases are not available. You will need to build from source code and install.

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            Spark-Scala Key Features

            No Key Features are available at this moment for Spark-Scala.

            Spark-Scala Examples and Code Snippets

            No Code Snippets are available at this moment for Spark-Scala.

            Community Discussions

            QUESTION

            How to run a Spark-Scala unit test notebook in Databricks?
            Asked 2021-Jun-14 at 15:42

            I am trying to write a unit test code for my Spark-Scala notebook using scalatest.funsuite but the notebook with test() is not getting executed in databricks. Could you please let me know how can I run it?

            Here is the sample test code for the same.

            ...

            ANSWER

            Answered 2021-Jun-14 at 15:42

            You need to explicitly create the object for that test suite & execute it. In IDE you're relying on specific runner, but it doesn't work in the notebook environment.

            You can use either the .execute function of create object (docs):

            Source https://stackoverflow.com/questions/67971085

            QUESTION

            Spark Scala - Split Array of Structs into Dataframe Columns
            Asked 2021-May-12 at 21:24

            I have a nested source json file that contains an array of structs. The number of structs varies greatly from row to row and I would like to use Spark (scala) to dynamically create new dataframe columns from the key/values of the struct where the key is the column name and the value is the column value.

            Example Minified json record ...

            ANSWER

            Answered 2021-May-10 at 05:47

            You could do it this way:

            Source https://stackoverflow.com/questions/67428450

            QUESTION

            Spark Dataframe filldown
            Asked 2021-Apr-14 at 15:32

            I would like to do a "filldown" type operation on a dataframe in order to remove nulls and make sure the last row is a kind of summary row, containing the last known values for each column based on the timestamp, grouped by the itemId. As I'm using Azure Synapse Notebooks the language can be Scala, Pyspark, SparkSQL or even c#. However the problem here is that the real solution has up to millions of rows and hundreds of columns, so I need a dynamic solution that can take advantage of Spark. We can provision a big cluster to how to make sure we take good advantage of it?

            Sample data:

            ...

            ANSWER

            Answered 2021-Apr-14 at 15:32

            For many columns you could create an expression as below

            Source https://stackoverflow.com/questions/67065847

            QUESTION

            SPARK: sum of elements with this same indexes from RDD[Array[Int]] in spark-rdd
            Asked 2021-Mar-06 at 17:12

            I have three files like:

            ...

            ANSWER

            Answered 2021-Mar-06 at 17:08

            You can use reduce to sum up the arrays:

            Source https://stackoverflow.com/questions/66508060

            QUESTION

            maven-guava: java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkArgument(ZLjava/lang/String;JJ)V
            Asked 2020-Dec-22 at 19:44

            I'm experiencing problem with maven (tried sbt as well, same result) and Google's guava, which I'm new to. I found a lot of questions of this kind in SO, but none of the solutions worked for me (searched for internal deps using mvn tree | less, excluded guava from everywhere, deleted my local .m2, reset cache in IntelliJ, tried all af the Guava versions starting from 22.0). no matter what, I keep getting:

            ...

            ANSWER

            Answered 2020-Dec-21 at 13:25

            the solution was to place guava to the very beginning of the , remove hadoop as an independent dependency, switch to hadoop2 (instead of 3) and Java8 (instead of 11) and add maven-shade-plugin. the resulting pom.xml:

            Source https://stackoverflow.com/questions/65321043

            QUESTION

            Move characters to the end of a string in scala
            Asked 2020-Nov-22 at 14:59

            I have a file with following type of strings:

            ...

            ANSWER

            Answered 2020-Nov-21 at 15:53

            The main problem with your current approach is that the second replacement also needs to remove whitespace, otherwise it will only remove digits, but leave behind both letters and spaces. Then, you need an additional step to reintroduce the original spaces in between each character. Assuming you wanted to use a Java-esque approach, you could try:

            Source https://stackoverflow.com/questions/64944457

            QUESTION

            Split single String column to multiple columns in Spark-Scala
            Asked 2020-Nov-22 at 03:52

            I have a dataframe as:

            ...

            ANSWER

            Answered 2020-Nov-19 at 08:13

            one way to address the irregular size in the column is to tweak the representation.

            for example:

            Source https://stackoverflow.com/questions/64894491

            QUESTION

            How to perform one to many mapping on spark scala dataframe column using flatmaps
            Asked 2020-Nov-18 at 08:41

            I am looking for specifically a flatmap solution to a problem of mocking the data column in a spark-scala dataframe by using data duplicacy technique like 1 to many mapping inside flatmap

            My given data is something like this

            ...

            ANSWER

            Answered 2020-Nov-18 at 04:01

            I see that you are attempting to generate data with a requirement of re-using values in the ID column.

            You can just select the ID column and generate random values and do a union back to your original dataset.

            For example:

            Source https://stackoverflow.com/questions/64880567

            QUESTION

            How can I apply boolean indexing in a Spark-Scala dataframe?
            Asked 2020-Oct-30 at 10:26

            I have two Spark-Scala dataframes and I need to use one boolean column from one dataframe to filter the second dataframe. Both dataframes have the same number of rows.

            In pandas I would so it like this:

            ...

            ANSWER

            Answered 2020-Sep-08 at 18:00

            you can zip both DataFrames and filter on those tuples.

            Source https://stackoverflow.com/questions/63799126

            QUESTION

            python cut between partitioned column results
            Asked 2020-Oct-17 at 19:18

            I use below code in Spark-scala to get the partitioned columns.

            ...

            ANSWER

            Answered 2020-Oct-17 at 19:18

            part_cols in the question is an array of rows. So the first step is to convert it into an array of strings.

            Source https://stackoverflow.com/questions/64391047

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install Spark-Scala

            You can download it from GitHub.

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            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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