RFR: 8323670: A few client tests intermittently throw ConcurrentModificationException

[Tejesh R]

On Mon, 22 Jan 2024 08:31:57 GMT, Andrey Turbanov <aturbanov at openjdk.org> wrote:

>> "_Synchronized methods enable a simple strategy for preventing thread interference and memory consistency errors: if an object is visible to more than one thread, all reads or writes to that object's variables are done through synchronized methods_" as per this statement from the doc ([Synchronized Methods](https://docs.oracle.com/javase/tutorial/essential/concurrency/syncmeth.html)) it should be handled right?
>
> _all reads or writes to that object's variables are done through synchronized methods_
> 
> This is a key requirement. In your case you have added `synchronized` only to a method, which reads that object. But a writer is not `synchronized` in you case.

As per my analysis `fileCache` is synchronized in other places also. Do you notice any places where it is not synchronized?

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PR Review Comment: https://git.openjdk.org/jdk/pull/17462#discussion_r1461504502