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https://issues.apache.org/jira/browse/ACCUMULO-4331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Wall updated ACCUMULO-4331:
-----------------------------------
Assignee: Dave Marion
> Make port configuration and allocation consistent across services
> -----------------------------------------------------------------
>
> Key: ACCUMULO-4331
> URL: https://issues.apache.org/jira/browse/ACCUMULO-4331
> Project: Accumulo
> Issue Type: Bug
> Affects Versions: 1.8.0
> Reporter: Dave Marion
> Assignee: Dave Marion
> Fix For: 1.8.0
>
>
> There was some discussion in ACCUMULO-4328 about ports, so I decided to track
> down how the client ports are configured and allocated. Issues raised in the
> discussion were:
> 1. The port search feature was not well understood
> 2. Ephemeral port allocation makes it hard to lock servers down (e.g.
> iptables)
> Looking through the code I found the following properties allocate a port
> number based on conf.getPort(). This returns the port number based on the
> property and supports either a single value or zero. Then, in the server
> component (monitor, tracer, gc, etc) this value is used when creating a
> ServerSocket. If the port is already in use, the process will fail.
> {noformat}
> monitor.port.log4j
> trace.port.client
> gc.port.client
> monitor.port.client
> {noformat}
> The following properties use TServerUtils.startServer which uses the value in
> the property to start the TServer. If the value is zero, then it picks a
> random port between 1024 and 65535. If tserver.port.search is enabled, then
> it will try a thousand times to bind to a random port.
> {noformat}
> tserver.port.client
> master.port.client
> master.replication.coordinator.port
> replication.receipt.service.port
> {noformat}
> I'm proposing that we deprecate the tserver.port.search property and the
> value zero in the property value for the properties above. Instead, I think
> we should allow the user to specify a single value or a range (M-N).
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