algebird | Abstract Algebra for Scala
kandi X-RAY | algebird Summary
kandi X-RAY | algebird Summary
Abstract algebra for Scala. This code is targeted at building aggregation systems (via Scalding or Apache Storm). It was originally developed as part of Scalding's Matrix API, where Matrices had values which are elements of Monoids, Groups, or Rings. Subsequently, it was clear that the code had broader application within Scalding and on other projects within Twitter. See the Algebird website for more information.
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QUESTION
I am trying to create a source for metrics from my spark application written in Scala to export data to another system, preferable to Prometheus. According to this site from Data bricks I need to create a source that extends the Source trait. However, the Source trait is private[spark] trait Source
and my source cannot visualize it. When I create this class I get the error Symbol Source is inaccessible from this place
.
ANSWER
Answered 2020-Oct-08 at 15:42You will need to put your class which extends Source in the same package as source
QUESTION
I am creating Maven project in Intellij with spark and scala.But Intellij failed to recognise sparksession, sparkcontext and sqlcontext. Image attached herewith.
Error: Cannot resolve symbol getsqlcontext Error: Cannot resolve symbol getSparkContaxt
My Understanding about POM is A Project Object Model or POM is the fundamental unit of work in Maven. It is an XML file that contains information about the project and configuration details used by Maven to build the project.
Do i need to change something in POM Properties or dependency.
My POM file looks like this.
...ANSWER
Answered 2020-Jun-25 at 18:23There are no such functions in the Spark, you need to create context correctly, like this (here is the full example):
QUESTION
I am trying to upgrade a scalding job running on CDH 4.5 to CDH 5.5.1. The job uses json4s to parse through json data. I am getting the below error when I run the job on the cluster. It works well on my local machine.
I am using scala 2.10 & Scalding 0.15.0 versions.
...ANSWER
Answered 2017-Jun-01 at 14:04NoSuchMethodError
is always a sign for incompatible jar files. In your case i would say it is between jackson.module.scala
and jackson.databind
Please Switch to the same Version of both files.
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