Spring Batch: What is the way to pass a huge Map Object across the Job in Spring Batch

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Use case: Step 1: ItemReader : Reading Data from Database in chunk of 1000 ItemProcessor : Process those Data. ItemWriter : Write the data in a Map for used in next step

Step 2: ItemReader : Reading the Map ItemProcessor : Process the Map data and get the new object. ItemWriter : Persist the new process object in database.

Now I want the Map the should remain same across the job, Currently I have created a different POJO class for Map and Autowired in the step to use it, but the problem is when ever I new chunk of data loading my Map is reseting but I want to keep the Map object with all its value as it is across the Job execution.

1
springspring-bootspring-batch
Could you add the code to the question? – Hansjoerg Wingeier
How big is "huge"? – Michael Minella
@MichaelMinella..its a huge key, value pair that's why I not using JobExecutionContext, because in some other place I have read that its not a good practice to set a huge dataset inside JobExecutionContext. – PID

1 Answers

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Try with StepExecutionListener.