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Select JVM when running spark job


Select JVM when running spark job

By : user2952839
Date : November 19 2020, 03:59 PM
This might help you Ok, it seems using SPARK_YARN_USER_ENV is one of the ways to solve the issue. Also, it seems setExecutorEnv can be used for this, but I didn't try.
code :


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Running spark-submit with --master yarn-cluster: issue with spark-assembly

Running spark-submit with --master yarn-cluster: issue with spark-assembly


By : user2910843
Date : March 29 2020, 07:55 AM
it should still fix some issue This is probably because you left sparkConf.setMaster("local[n]") in the code.
Running a distributed Spark Job Server with multiple workers in a Spark standalone cluster

Running a distributed Spark Job Server with multiple workers in a Spark standalone cluster


By : Jonathan Quach
Date : March 29 2020, 07:55 AM
I wish this help you The problem was resolved in the chat
You have to change your JobServer .conf file to set the master parameter to point to your cluster:
code :
master = "spark://ip:7077"
./server_start.sh
curl -d "" '[hostname]:8090/contexts/cassandra-context?context-factory=spark.jobserver.context.CassandraContextFactory&num-cpu-cores=8&memory-per-node=2g'
Spark-shell running a SELECT for a dataframe

Spark-shell running a SELECT for a dataframe


By : simonSweeney
Date : March 29 2020, 07:55 AM
help you fix your problem The result is correct. You are doing a transformation only as select is a transformation.
If you save it in a parquet file or a csv file you will see the result and can confirm that the column is already selected.
code :
val selecteddf = customerdf.select("name")
selecteddf.show(false)
Error Running Cassandra from Spark in Java - NoClassDefFoundError at org.apache.spark.sql.catalyst

Error Running Cassandra from Spark in Java - NoClassDefFoundError at org.apache.spark.sql.catalyst


By : kiran ale magar
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I am using Cassandra 3.0.3, Spark 1.6.0 and trying to run by combining code from the old documentation in http://www.datastax.com/dev/blog/accessing-cassandra-from-spark-in-java and the new one in https://github.com/datastax/spark-cassandra-connector/blob/master/doc/7_java_api.md. , Code is looking for
How to get execution DAG from spark web UI after job has finished running, when I am running spark on YARN?

How to get execution DAG from spark web UI after job has finished running, when I am running spark on YARN?


By : Heena
Date : March 29 2020, 07:55 AM
To fix the issue you can do Running only history-server is not sufficient to get execution DAG of previous jobs. You need specify the jobs to store the events logs of all previous jobs.
Run Spark history server by ./sbin/start-history-server.sh
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