subprojects/parseq/src/main/java/com/linkedin/parseq/Engine.java
public boolean tryRun(final Task<?> task, final long timeout, final TimeUnit unit) throws InterruptedException {
    return tryRun(task,  defaultPlanClass(task), timeout, unit);
  }
public boolean tryRun(final Task<?> task, final long timeout, final TimeUnit unit) throws InterruptedException {
    return tryRun(task,  defaultPlanClass(task), timeout, unit);
  }
Runs the given task if Engine has a capacity to start new plan as specified by
{@value #MAX_CONCURRENT_PLANS} configuration parameter within specified amount of time.
For the sake of backwards compatibility default value for a {@value #MAX_CONCURRENT_PLANS} is
{@value #DEFUALT_MAX_CONCURRENT_PLANS} which essentially means "unbounded capacity".
Task passed in as a parameter becomes a root on a new Plan.
All tasks created and started as a consequence of a root task will belong to that plan and will share a Trace.
If Engine does not have capacity to start the task, this method will block up to specified amount of
time waiting for other concurrently running Plans to complete. If there is no capacity to start the task
within specified amount of time this method will return false. It returns {@code true} if Plan was successfully started.
@param task the task to run
@param timeout amount of time to wait for Engine's capacity to run the task
@param unit
@return true if Plan was started within the given waiting time and the current thread has not
been {@linkplain Thread#interrupt interrupted}.