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phoenix.query.threadPoolSize - how to decide the right pool size

phoenix.query.threadPoolSize - how to decide the right pool size

New Contributor

I am working on tuning the Phoenix and HBase and came across phoenix.query.threadPoolSize property.

As per the documentation at , it says - Number of threads in client side thread pool executor. As the number of machines/cores in the cluster grows, this value should be increased.

Request some help to understand this better.

My questions -

1. Is the thread pool created where is running i.e on the client machine OR on the machine running the PhoenixQueryserver OR the region servers ?

2. Is the recommendation to add more cores to this client machine as the number of machine/cores in the cluster grow so that the pool size can be increased ?

3. how to decide on the right pool size and configure phoenix.query.threadPoolSize 

4. Does the client spin up and use any threads on the region servers to speed up the work ?

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