Plasma (store) deprecated since PyArrow 10.0.0 — will be removed in 12.0.0 or so

[eaogorman]

PyArrow 10.x.x (as installed from pip) cannot connect to the Plasma store.
PyArrow 9.x.x (as installed from conda) connects.

Plasma (store) is deprecated since Arrow 10.0.0 — it will be removed in 12.0.0 or so.

Find alternatives for store — swap out data store backend, or specify version 9.x.x for install.

One possibility = Redis: open source, in-memory key-value data store, supports pub/sub, µs latency, well-maintained

[rwschonberg]

@jmxpearson can we close this now that Redis was merged into dev as the default?

[jmxpearson]

We’ll close when we merge into main.

[jmxpearson]

Closed by #203. Plan is to have a demo (not hit by testing) with a PlasmaStoreInterface class that maintains backward compatibility.