spark-excel | A Spark plugin for reading and writing Excel files
kandi X-RAY | spark-excel Summary
kandi X-RAY | spark-excel Summary
A library for querying Excel files with Apache Spark, for Spark SQL and DataFrames.
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QUESTION
I'm trying to use directJoin with the partition keys. But when I run the engine, it doesn't use directJoin. I would like to understand if I am doing something wrong. Here is the code I used:
Configuring the settings:
...ANSWER
Answered 2022-Mar-31 at 14:35I've seen this behavior in some versions of Spark - unfortunately, the changes in the internals of Spark often break this functionality because it relies on the internal details. So please provide more information on what version of Spark & Spark connector is used.
Regarding the second error, I suspect that direct join may not use Spark SQL properties, can you try to use spark.cassandra.connection.host, spark.cassandra.auth.password, and other configuration parameters?
P.S. I have a long blog post on using DirectJoin, but it was tested on Spark 2.4.x (and maybe on 3.0, don't remember
QUESTION
I'm trying to read an Excel file from HDFS location using Crealytics package and keep getting an error (Caused by: java.lang.ClassNotFoundException:org.apache.spark.sql.connector.catalog.TableProvider). My code is below. Any tips? When running the below code, the spark session initiates fine and the Crealytics package loads without error. The error only comes when running the "spark.read" code. The file location I'm using is accurate.
...ANSWER
Answered 2022-Feb-28 at 22:55Looks like I'm answering my own question. After a great deal of fiddling around, I've found that using an old version of crealytics works with my setup, though I'm uncertain why. The package that worked was version 13 ("com.crealytics:spark-excel_2.12:0.13.0"), though the newest is version 15.
QUESTION
I'm trying to read an excel file with spark using jupyter in vscode,with java version of 1.8.0_311 (Oracle Corporation), and scala version of version 2.12.15.
Here is the code below:
...ANSWER
Answered 2021-Dec-24 at 12:11Check your Classpath: you must have the Jar containing com.crealytics.spark.excel in it.
With Spark, the architecture is a bit different than traditional applications. You may need to have the Jar at different location: in your application, at the master level, and/or worker level. Ingestion (what you’re doing) is done by the worker, so make sure they have this Jar in their classpath.
QUESTION
I am building a desktop application. I am using ProGuard with the following config:
...ANSWER
Answered 2020-Aug-13 at 16:35You have the line ${java.home}/lib/rt.jar in your configuration for proguard. This is no longer valid in JDK11 as it was removed in that version of Java.
QUESTION
(new to apache spark)
I tried to create a small Scala Spark app which read excel files and insert data into database, but I have some errors which are occured due of different library versions (I think).
...ANSWER
Answered 2020-Jul-08 at 09:50I know that this doesn't answer directly your questions, but this may still help your in solving your issue.
- You can use the pandas package from python.
- read in the excel file with pandas and python
- convert the pandas dataframe to spark dataframe
- save with pyspark as parquet/hive table
- load data with scala&spark
QUESTION
Is there any way to transfer/copy my existing env (which has everything already installed) to the server?
...ANSWER
Answered 2020-Jun-22 at 08:36First we need to pack conda env by using below command
Activate your conda env which you want to pack and then use below command
QUESTION
Anyone can tell me how to use jars and packages .
- I'm working on web aplication.
- For Engine side spark-mongo
bin/spark-submit --properties-file config.properties --packages org.mongodb.spark:mongo-spark-connector_2.11:2.4.1,com.crealytics:spark-excel_2.11:0.13.1 /home/PycharmProjects/EngineSpark.py 8dh1243sg2636hlf38m
- I'm using above command but it's downloading each time from maven repository(jar & packages).
- So now my concern is if i'm offline it gives me error
- its good if their any way to download it only once so no need to download each time
- any suggestion how to deal with it.
ANSWER
Answered 2020-Jun-12 at 10:42Get all the jar files required then pass them as a parameter to the spark-submit.
This way you need not to download files everytime you submit the spark job.
You have to use --jars instead of --packages
QUESTION
I am trying to write different Java Datasets into an excel file which will contain multiple sheets inside it using crealytics/spark-excel library.
...ANSWER
Answered 2020-Mar-03 at 07:42Use dataAddress option instead
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