Zhijun Fu created ARROW-2551:
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Summary: [Plasma] Improve notification related code
Key: ARROW-2551
URL: https://issues.apache.org/jira/browse/ARROW-2551
Project: Apache Arrow
Issue Type: Improvement
Components: Plasma (C++)
Reporter: Zhijun Fu
This change addresses two issues in plasma notification code:
# Currently plasma store uses recv_fd to receive the notification fd from
client. As mentioned in comments from the code, this could cause plasma store
to hang if client doesn't call send_fd. This particular change puts the
notification fd in SubscriptionRequest to solve the problem.
# When a client subscribes to plasma store, the store pushes notifications of
existing objects to ALL subscribers - while in this case it just needs to push
to the new subscriber. This change adds a new interface to push to a particular
client.
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