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Tag: SPARK

Flex – How to set the Name property of the Spark status as a string variable value in a statement

I have a spark state declared in mxml. I also have a class of string constants. I want my state name to match the string constant. Is it possible to do this directly in mxml and How to do this?
I

October 20, 2021By Simo Flex attribute, change, Declaration, Flex, How to, setting, SPARK, status, string, value, wayLeave a Comment

Hadoop – Kafka Spark streaming: Unable to read

I am integrating Kafka and Spark, using spark-streaming. I created a theme as a producer of Kafka:

bin/kafka-topics.sh –create –zookeeper localhost:2181 –replication-factor 1 –partitions

October 12, 2021By Simo Hadoop Hadoop, Kafka, media, Message, read, SPARK, stream, UnableLeave a Comment

Hadoop – How to Create a Spark DataFrame from Sequencefile

I am using spark 1.5. I want to create a data frame from a file in HDFS. The HDFS file contains json data with a large number of fields in a sequence input file format.

Is there a way to do t

October 12, 2021By Simo Hadoop create, DataFrame, Hadoop, How, Sequencefile, SPARKLeave a Comment

Hadoop – write Spark data frame as inlaid to S3 instead of creating _temporary folder

Using pyspark I am reading a data frame from a parquet file on Amazon S3

dataS3 = sql. read.parquet(“s3a://” + s3_bucket_in) This is no problem. But then I try to write data

dataS3.writ

October 12, 2021By Simo Hadoop Created, data, folder, frame, Hadoop, Mosa, S3, SPARK, temporary, writeLeave a Comment

Hadoop – Apache Spark runs Spark-shell on Yarn error

I downloaded spark-2.1.0-bin-hadoop2.7.tgz from http://spark.apache.org/downloads.html. I have Hadoop HDFS and YARN with $ start-dfs.sh and $start-yarn.sh start. But running $spark-shell –master ya

October 12, 2021By Simo Hadoop apache, error, Hadoop, running, shell, SPARK, YarnLeave a Comment

Performance – How to get time costs from HDFS read data from HDFS from spark

Spark’s timeline contains:

>Scheduler delay
>Task deserialization time
>Random play time
>Performer calculation time
>Random play write time
>Result serialization time
>Result time

It

October 2, 2021By Simo Performance cost, data, Get, HDFS, How, performance, read, SPARK, timeLeave a Comment
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