How to use JPA-Reader to read from database using spring batch with spring boot? Also need to insert records in bulk using JPA-Writer? How to do it using Spring batch? I am new to spring batch.
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I am using spring batch and and my database is Couchbase. Is there any way to read documents from Couchbase in batch or in bulk mode?
Have a look at the Spring batch extensions project
https://github.com/spring-projects/spring-batch-extensions/pull/5/commits
I am using Spring boot MongoTemplate. I am using insert(Collection, EntityClass) method to insert a list of data as a single batch.
Questions:
Do I have to do any other configuration explicitly to enable batch?
How can I verify if the batch is working or not?
Is insert(Collection, EntityClass) and BulkOperation same?
I am currently working on Spring Boot and Spring Batch application to read 200,000 records from Database, process it and generate XML output.
I wrote single threaded Spring Batch program which uses JDBCPagingItemReader to read batch of 10K records from Database and StaxEventItemReader to generate this output. Total process is taking 30 minutes. I am wanting to enhance this program by using Spring Batch local Partitioning. Could anyone share Java configuration code to do this task of Spring Batch partitioning which will split processing into multi thread + multi files.. I tried to multi thread java configuration but StaxEventItemReader is single thread so it didn't work. Only way I see is Partition.
Appreciate help.
You are correct that partitioning is the way to approach this problem. I don't have an example of JDBC to XML of how to configure a partitioned batch job, but I do have one that is CSV to JDBC in which you should be able to just replace the ItemReader and ItemWriter with the ones you need (JdbcPagingItemReader and StaxEventItemWriter respectively). This example actually uses Spring Cloud Task to launch the workers as remote processes, but if you replace the partitionHandler with the TaskExecutorPartitionHandler (instead of the DeployerPartitionHandler as configured), that would execute the partitions internally as threads.
https://github.com/mminella/S3JDBC
In my spring batch project i am reading data from db and write data to db, when i checked the dynatrace after job completed, i am not able to see the db select and insert queries in dynatrace.
Is any configuration need to do in spring batch to get these queries in dynatrace ?
Thanks!
We are using Spring Data MongoDB to operate mongodb. I was using Spring Data JPA to manage some relationship database. The SQL can be printed into the log file (log4j or logback). But for the mongoDB operation, there is no log output. Is there any way can let our debug what document (json object) has been insert or updete into the MongoDB base on Spring Data MongoDB module?
Spring data mongodb contains the LoggingEventListener.
Unluckily, the EventListeners do not support all batch operations. If you have batch operations, you may need to add your own costum logging.