[Context Aware Segments] Fix indexing regression for Context Aware Segments due to contention on DocumentWriterFlushControl

[RS146BIJAY]

Is your feature request related to a problem? Please describe

Fix indexing regression for Context Aware Segments due to contention on DocumentWriterFlushControl. We are observing 30% regression on throughput and latency because of this issue

Related component

Indexing

Describe alternatives you've considered

No response

Additional context

No response

[cwperks]

Catch All Triage - 1 2 3

Thank you for filing this issue @RS146BIJAY . Are you actively working on this? What is the status?