WebJul 4, 2024 · Is it possible to call a scala function from python. The scala function takes a dataframe and returns a dataframe. If possible, with lazy evaluation. Example: df = … WebNov 26, 2024 · I am running a PySpark application on a remote cluster with DataBricks Connect. I'm facing a problem when trying to retrieve the minimum value of a column when another column has a certain value. When running the following line: feat_min = df.filter (df ['target'] == 1).select ( F.min (F.col ('feat')).alias ('temp')).first ().temp
Parallel REST API request using Spark(Databricks)
WebMar 17, 2024 · Yes, it's possible you just need to get access to the underlying Java classes of JDBC, something like this: # the first line is the main entry point into JDBC world driver_manager = spark._sc._gateway.jvm.java.sql.DriverManager connection = driver_manager.getConnection(mssql_url, mssql_user, mssql_pass) … WebDec 13, 2024 · Now, there are two approaches we can pass our dataframe between Python and Scala back and forth. The first one is to convert our Pyspark dataframe to a Java/Scala dataframe. jdf = df._jdf tasks in planner und to do schulung
Spark - Calling Scala code from PySpark - GitHub Pages
WebMay 14, 2024 · Below are few approaches I found for Scala-> PySpark Jython is one way -> but it doesn't have all api/libs as Python Pipe method -> val pipedData = data.rdd.pipe ("hdfs://namenode/hdfs/path/to/script.py") But with Pipe I loose benefits of dataframe and in python I may need to reconvert it to Dataframe/DataSet. WebJan 13, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. WebAug 20, 2024 · Unfortunately it is not possible to call a Java/Scala library directly within a map call from Python code. This answer gives a good explanation why there is no easy way to do this. In short the reason is that the Py4J gateway (which is necessary to "translate" the Python calls into the JVM world) only lives on the driver node while the map calls that … tasks in outlook for mac