JavaSparkContext not serializable

JavaSparkContext not serializable

By : npasto
Date : November 20 2020, 01:01 AM
it should still fix some issue No, JavaSparkContext is not serializable and is not supposed to be. It can't be used in a function you send to remote workers. Here you're not explicitly referencing it but a reference is being serialized anyway because your anonymous inner class function is not static and therefore has a reference to the enclosing class.
Try rewriting your code with this function as a static, stand-alone object.
code :

Share : facebook icon twitter icon
How to get SparkContext from JavaSparkContext in PySpark?

How to get SparkContext from JavaSparkContext in PySpark?

By : user3061784
Date : March 29 2020, 07:55 AM
hop of those help? sc._jsc.sc() is the right way to access the underlying SparkContext. To illustrate:
code :
>>> sc._jsc.sc()
JavaObject id=o27
>>> sc._jsc.sc().version()
>>> sc._jsc.sc().defaultMinSplits()
Is it possible to get and use a JavaSparkContext from within a task?

Is it possible to get and use a JavaSparkContext from within a task?

By : coffeedrunk
Date : March 29 2020, 07:55 AM
wish of those help
Is it possible to get and use a JavaSparkContext from within a task?
org.apache.spark.SparkException: Task not serializable - JavaSparkContext

org.apache.spark.SparkException: Task not serializable - JavaSparkContext

By : user3766173
Date : March 29 2020, 07:55 AM
like below fixes the issue The gson reference is 'pulling' the outer class into the scope of the closure, taking its full object graph with it.
In this case, create the gson object within the closure:
code :
public SupplierDTO call(String str) throws Exception {   
   Gson gson = Gson();
   return gson.fromJson(str, SupplierDTO.class);
Get JavaSparkContext from a SparkSession

Get JavaSparkContext from a SparkSession

By : Strawmelon
Date : March 29 2020, 07:55 AM
will help you Im am using a SparkSession to run my spark application because I use a lot of spark-sql features. I would like to use the JavaSparkContextto create an RDD from a list. But via the Session I can only get an ordinary SparkContext. Is there a way to transform the context in this direction? , After determining the SparkContext, you could use:
code :
SparkContext sc = ...
JavaSparkContext jsc = JavaSparkContext.fromSparkContext(sc);
System.out.println("Serializable: " + arrayList instanceof Serializable) is not printing 'Serializable' word

System.out.println("Serializable: " + arrayList instanceof Serializable) is not printing 'Serializable' word

By : user3687692
Date : March 29 2020, 07:55 AM
To fix the issue you can do I tried to execute following simple code. System.out.println() is not printing word 'Serializable:'. Output is true. , You are missing out a bracket. You should be writing like this :
code :
System.out.println("Serializable: " + (arrayList instanceof Serializable))
Related Posts Related Posts :
  • Forcefully terminating a thread I didn't write in Java
  • Issue with ojdbc jar in Maven
  • String array length java
  • Java basic compilation error
  • Inquiry about writing a Char via ByteBuffer
  • Getting unexpected results when type casting between long and double
  • Variable throws variable might not have been initialized error
  • Start/stop java application from an external script
  • Confusion in declaring String Objects
  • What are some ways to do multi-core programming on Android, not just multi-thread?
  • hibernate - process scoped identity
  • Null Pointer Exception on getGraphics()
  • Can we print a java message on console without using main method, static variable and static method?
  • sending text from editText to ListView (2 activities)
  • Transfer value from JList to another class in Java
  • Creating 2 streams with one socket
  • How measure time stolen from virtual machine, in Scala/Java?
  • How can I programmatically generate keypress events?
  • org.apache.commons.net.ssh documentation
  • Implementation of Dijkstra`s Algorithm - Stuck in an infinite loop
  • Should I throw IllegalArgmentException when 'user of given id not exist'?
  • In Nimbus, how to paint TextField when MouseOver?
  • why won't checkforWin(File f) return true when it is true?
  • Android: Cursor is always returning null even if the database is not empty
  • Repeating for loop in menu
  • Can Java garbage collector randomly delete objects in the On-Heap tier?
  • Apache CXF Exception: SSL connection unexpectedly closed
  • Add properties to ArrayList<Object> in Java
  • Multiple Adapters or One Adapter for different lists and objects - Code Performance
  • Is it good practice in Java for a class's method to redundantly return a modified global field of the class?
  • How to change the color of the background in libgdx labels?
  • direct file path not working
  • ClassFileTransformer + Javassist: no such field
  • How do I change and instance variable for an object which the user selects from a combobox?
  • reading and updating a large xml file in java
  • ActionListener and Thread.sleep
  • What is the maximum of number of arguments for varargs in java?
  • When I compile I get an error as "ask" cannot be resolved or is not a field"
  • What is the best way to check if 4 integer variables are equal to 0?
  • Storing constant webdriver elements in an enum
  • Java: Why main class does not extend Thread class
  • Java - how to find out if a directory is being used by another process?
  • How can I get a method to print?
  • Java unknown exceptions
  • BufferedReader,StreamWriter crash
  • found raw type: JComboBox
  • Java Generics -> Function return type
  • how to refresh contents of jtable on event of action listener?
  • Why does List interface extend Collection interface?
  • Pros and Cons of Clojure http client libraries
  • use final inside a for each loop
  • Convert java data object to service object
  • Unsupported major.minor version 51.0 while executing JSP
  • How do I display a word diagonally in Java?
  • making sure one task completes before another starts in java
  • My program gives an index out of bounds error
  • Removing duplicate characters in a String (user inputted keyword)
  • Jersey 2.0 Content-Length not set
  • AWS.SimpleQueueService.NonExistentQueue Exception thrown when Accessing Existing SQS queue
  • Where can I find the source code for the com.sun.jdi package?
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org