Interview QA | Spring Batch - Fault Tolerance Using Skip Policy & Listener | Java Techie

in my case I am using row mapper in reader to change the object fetched from DB and in itemProcessor I am again sending something else to writer then what should I provide in StepSkipListener in place of customer?

I am Using Skiplistener in async batch processing and I see that SkipListener is not getting called. If i change the batch to normal processing then the listener is getting called. Any reason behind that?

Its really great one but I just have a question how does spring batch can be handled with List of Object from reader to processor to writer into DB. DO you have any good refrences ?

I have a doubt, it will insert only failed data that's fine,
But it will process all the record na ...
Since rest all records are already present, it will not insert again, processer will process all those, right?

I have query if without any fault tolerance , i got error at 10th line of 1000 rows..then what will be output? Is spring batch insert 9 rows or all rows are rollback?

SkipListener should be SkipListener<Customer, Customer>.
If taskExecutor option is used in the step, then skipLimit applies per thread. How to use an aggregate count for skipLimit?

Thanks for clean and simple🥇

I tried the same think but I am using JobBuilder and StepBuilder here its inserting all records except the faulty one with out making use of skip policy and all for me I am using new version of spring-Boot i.e 3.0 , is this changed in newer version?

Hi JavaTechie,Need a reference or video for spring batch reading the data from multiple tables with multiple queries.

And also how commit count will update in multi threading in step batch execution table...if you give answer or any video it will be helpful

Your all videos are awesome,any spring related info I will watch your videos

The demo, shows how to skip failed and reload the corrected data. Actually it will process the whole file again, write the failed ones from pervious run, for those exists in database due to previous load successfully, it will through exceptions and get caught by skip listeners.

Assume the file has million records, skip limit is 100, and 90 record failed in the 1st run. After corrected the data file and run it again, the 2nd run will have 1 million - 90 errors and it will exceed the skip limit.

So why not in the skip listener redirect the errors to another error table in database, and load again only from the corrected errors?

Thanks for this great content. Can you please make a series on different design patterns with interview questions on design patterns?

As usual. Great content and explanation 🎉

Great explanation! Can you do video on Restart a Step -> startLimit(), allowIfComplete(),preventRestart()? Confused how it works. And None made tutorials on that.

Thank you so much 🎉

Is it possible to use multi resource item reader along with spring partitioning concept and in partitioning video u used jpa writer ..can i use jdbc writer instead?

Please do a video for read the uploading excel file using spring batch , it will be much help full because nowhere such eg or experiment is not there

Great Learning stuff.Keep Going 🎉 and good job❤❤