Issue with parallel processing in Apache camel file processing

["suvendupn@gmail.com" <su...@gmail.com>]

Hello,

We have an usecase to process a file that has around 10k records. We are
using latest apache-camel 3.7.0, jdk 11
The route we use is

from(ContextFrom())
          .shutdownRunningTask(ShutdownRunningTask.CompleteAllTasks)
          .convertBodyTo(String.class, StandardCharsets.ISO_8859_1.name())
          .onCompletion()
              .process(PostProcessor)
              .to(CamelContextTo())
          .end()
          .split(body().tokenize(System.lineSeparator()))
          .streaming()
          .parallelProcessing()
          .choice()
          .when(headerCondition())
              .to(bean("OutputDto").method("setHeaderNTrailer"))
          .otherwise()
              .unmarshal(dto)
              .process(FileProcessor)
              .to(bean("OutputDto").method("setDto"))
          .end();

we have also used camel thread pool configuration with the below properties

ThreadPoolProfile masterPoolProfile = new
ThreadPoolProfile("masterPoolProfile");
    masterPoolProfile.setMaxPoolSize(2);
    masterPoolProfile.setMaxQueueSize(2);
    masterPoolProfile.setPoolSize(2);
    masterPoolProfile.setKeepAliveTime(2L);
    masterPoolProfile.setTimeUnit(TimeUnit.MINUTES);

this.getContext().getExecutorServiceManager().setDefaultThreadPoolProfile(masterPoolProfile);

Without parallel processing, the output generated has 10k records but with
parallel processing, some random records are missing out and the behavior
is intermittent.
We tried to check the documentation and the existing questions for parallel
processing but couldn't see if we are missing any thing, can anyone please
guide on this issue.

Regards,
Suvendu