1.Introduction      

    Manage New scheduler's containerPool, includes below features.

    1. Create prewarm container initially. 

    2. Backfill the prewarm container if possible.

    3. Cold start container based on the ContainerCreationMessage which fetch from ContainerManager using kafka.

    4. Maintain several kind pools, e.g. busyPool, inProgressPool, warmedPool, prewarmedPool, prewarmStartingPool.

    5. Send memoryInfo to etcd every 1 second.

2.Design consideration