Sergey Edunov created GIRAPH-1068:
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Summary: Make Zookeeper accept 0 as a port number and let it
choose free available port
Key: GIRAPH-1068
URL: https://issues.apache.org/jira/browse/GIRAPH-1068
Project: Giraph
Issue Type: Task
Reporter: Sergey Edunov
Assignee: Sergey Edunov
We have a few use cases where having zookeeper bound to specific port is very
inconvenient.
1) Unit tests that run in parallel.
2) Shared clusters where multiple giraph instances can run on the same
machines.
In theory we don't need to know what port zookeeper will run on. In most cases
we're fine with any port available.
Picking any available port is currently supported by the server socket, but is
not supported in the code that parses zookeper configs (this code lives in
zookeper).
We don't have to parse configs though, as we have a way to run zookeper in
process. And in that case we can have a full control on how zookeeper is
initialized.
For this task I want to allow 0 as a port number for zookeeper. Which will
allow us to run zookeeper on any available port. And I will also remove "out of
process" zookeeper, as it clearly provides no benefits to us.
Note: it will still be possible to run external zookeper, if you have it
running somewhere as a service.
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