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From "Apache Pulsar Slack" <apache.pulsar.sl...@gmail.com>
Subject Slack digest for #general - 2018-12-22
Date Sat, 22 Dec 2018 09:11:02 GMT
2018-12-21 13:25:05 UTC - borlandor: @borlandor has joined the channel
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2018-12-21 16:21:59 UTC - Haymon Edmur: @Haymon Edmur has joined the channel
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2018-12-21 16:40:34 UTC - Shalin: Does creating a pulsar function in a broker create instances
of pulsar functions in that broker or all brokers in the cluster?
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2018-12-21 16:41:54 UTC - Grant Wu: I don’t know what you mean by “in that broker” or
“all brokers”
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2018-12-21 16:42:09 UTC - Grant Wu: <http://pulsar.apache.org/docs/en/functions-deploying/>
does this help?  In general I don’t think how you deploy it impacts the behavior, just the
performance
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2018-12-21 16:42:41 UTC - Grant Wu: &gt; the function code will be uploaded to a Pulsar
broker and run alongside the broker rather than in your local environment.
seems to imply just one broker, but not clear
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2018-12-21 16:46:22 UTC - Shalin: Right, I was concerned about the performance part. Like
if `broker B` is serving `topic 1` and the function `test` reads from `topic 1` but is deployed
on `broker A`, it might not be ideal.
thinking_face : Grant Wu
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2018-12-21 16:48:05 UTC - Shalin: But then again a function would be interacting with multiple
topics served in different brokers, so not sure there could be locality aware deployment of
functions.
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2018-12-21 17:02:03 UTC - Shalin: @Grant Wu: Did that make sense? or is that not how pulsar
functions work ?
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2018-12-21 17:02:11 UTC - Grant Wu: Yeah it made sense
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2018-12-21 17:02:24 UTC - Grant Wu: You’ll have to wait for a response from a Pulsar dev
:sweat_smile:
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2018-12-21 17:02:52 UTC - Shalin: Lol, gotcha. :thumbsup:
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2018-12-21 18:35:46 UTC - Sanjeev Kulkarni: @Shalin pulsar functions running in a pulsar cluster
are distributed across all function workers in that cluster. The logic of which function instance
goes to which worker is pluggable. The current logic just does a round robin assignment and
thus is essentially random. However the mechanism is meant to be pluggable and we can have
other assignment logic like scheduling functions closest to the broker that serves input/output
topic. This is an area of active development 
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2018-12-21 20:06:34 UTC - Michael Weedon: @Michael Weedon has joined the channel
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2018-12-21 20:43:04 UTC - Daniel Root: I'm trying to reduce the number of log messages produced
by the standalone pulsar docker container.  I've modified the log4j2.yaml file  but can't
figure out how to load the changes.  If I restart the container my modifications are of course
gone.  How do I load these changes?  Restart the cluster?  If so how?  I do have access to
the admin-cli.
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