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https://issues.apache.org/jira/browse/ARROW-2551?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16467057#comment-16467057
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Zhijun Fu commented on ARROW-2551:
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PR is here:
https://github.com/apache/arrow/pull/2011
> [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
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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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