spark-applications | This directory contains sample application using Apache
kandi X-RAY | spark-applications Summary
kandi X-RAY | spark-applications Summary
This directory contains sample application using Apache Spark.
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Top functions reviewed by kandi - BETA
- Main entry point
- Set the email address
- Set the ID
- Set the username
- Main method to start Spark streaming
- Gets the SparkSession instance
- Starts Spark application
- Demonstrates how to sample a user
- Main method for testing
- Entry point to the Spark application
- Starts the Spark Session
- Main launcher for Couchbase application
- Entry point for testing
- Main method
- Main method to start a SparkCSV dataset
- Main method for testing
spark-applications Key Features
spark-applications Examples and Code Snippets
Community Discussions
Trending Discussions on spark-applications
QUESTION
I'm trying to use all resources on my EMR cluster.
The cluster itself is 4 m4.4xlarge machines (1 driver and 3 workers) with 16 vCore, 64 GiB memory, EBS Storage:128 GiB
When launching the cluster through the cli I'm presented with following options (all 3 options were executed within the same data pipeline):
Just use "maximizeResourceAllocation" without any other spark-submit parameter
This only gives me 2 executors presented here
Don't put anything, leave spark-defaults to do their job
Gives following low-quality executors
Use AWS's guide on how to configure cluster in EMR
Following this guide, I deduced following spark-submit
parameters:
ANSWER
Answered 2021-Sep-22 at 17:16Have you tried setting --master yarn
parameter and replace parameter spark.executor.memoryOverhead
by spark.yarn.executor.memoryOverhead
?
QUESTION
I have 27 million records in an xml file, that I want to push it into elasticsearch index Below is the code snippet written in spark scala, i'l be creating a spark job jar and going to run on AWS EMR
How can I efficiently use the spark to complete this exercise? Please guide.
I have a gzipped xml of 12.5 gb which I am loading into spark dataframe. I am new to Spark..(Should I split this gzip file? or spark executors will take care of it?)
...ANSWER
Answered 2020-Aug-28 at 13:31Not a complete answer but still a bit long for a comment. There are a few tips I would like to suggest.
It's not clear but I assume your worry hear is the execution time. As suggested in the comments you can improve the performance by adding more nodes/executors to the cluster. If the gzip file is loaded without partitioning in spark, then you should split it to a reasonable size. (Not too small - This will make the processing slow. Not too big - executors will run OOM).
parquet
is a good file format when working with Spark. If you can convert your XML to parquet. It's super compressed and lightweight.
Reading on your comments, coalesce
does not do a full shuffle. The coalesce algorithm changes the number of nodes by moving data from some partitions to existing partitions. This algorithm obviously cannot increase the number of partitions. Use repartition
instead. The operation is costly but it can increase the number of partitions. Check this for more facts: https://medium.com/@mrpowers/managing-spark-partitions-with-coalesce-and-repartition-4050c57ad5c4
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install spark-applications
You can use spark-applications like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the spark-applications component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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