Drivers should be thread safe.

[kumagi]

for concurrency of machine learning, Jubatus server holds giant lock for each model.
But giant lock is harmful for performance on multi-core processors.

Drivers should be thread safe, and server should not hold giant lock for each model.

[kmaehashi]

👍

This change will make core layer work more efficient especially in cases that feature extraction phase (which can be done simultaneously) is heavy.

[kmaehashi]

We'll make classifier driver thread-safe in 0.1.2 & 0.2.0.
Let's discuss what engine to make thread-safe for next.

[kmaehashi]

We've made classifier thread-safe.
I'll separate this issue.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

Closing this issue after a prolonged period of inactivity. Please feel free to create a new issue or re-open it if you need.