Fix strand hanging when strand count exceeds BALLERINA_SQL_MAX_POOL_SIZE #735
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Purpose
Fixes: ballerina-platform/ballerina-library#7244
The SynchronousQueue does not buffer tasks and only acts as a hand-off point. This causes the ThreadPoolExecutor to fail with a RejectedExecutionException, leading to unexecuted tasks and causing the Ballerina future to remain incomplete. As a result, the Ballerina strand hangs indefinitely.
Changing the SynchronousQueue to a LinkedBlockingQueue allows for task buffering, which eliminates the RejectedExecutionException and improves task execution.
Examples
Checklist