[
https://issues.apache.org/jira/browse/NUTCH-2784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17093207#comment-17093207
]
ASF GitHub Bot commented on NUTCH-2784:
---------------------------------------
sebastian-nagel opened a new pull request #518:
URL: https://github.com/apache/nutch/pull/518
Because it's a Nutch/Hadoop tool it really uses the same configuration
mechanism as all other tools, including command-line overrides:
```bash
$> bin/nutch showproperties | (head -2 && grep delay)
conf.name conf.value
substituted.value
================================================================================
crawl.gen.delay
604800000
fetcher.max.crawl.delay
30
fetcher.min.crawl.delay ${fetcher.server.delay}
5.0
fetcher.server.delay
5.0
fetcher.server.min.delay
0.0
ipc.client.tcpnodelay
true
page.load.delay
3
# command-line override of fetcher.server.delay:
$> bin/nutch showproperties -Dfetcher.server.delay=10.0 | (head -2 && grep
delay)
conf.name conf.value
substituted.value
================================================================================
crawl.gen.delay
604800000
fetcher.max.crawl.delay
30
fetcher.min.crawl.delay ${fetcher.server.delay}
10.0
fetcher.server.delay
10.0
fetcher.server.min.delay
0.0
ipc.client.tcpnodelay
true
page.load.delay
```
If configured and substituted value are identical only one is shown.
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> Add tool to list Nutch and Hadoop properties
> --------------------------------------------
>
> Key: NUTCH-2784
> URL: https://issues.apache.org/jira/browse/NUTCH-2784
> Project: Nutch
> Issue Type: Improvement
> Components: tool
> Reporter: Sebastian Nagel
> Priority: Minor
> Fix For: 1.17
>
>
> Nutch properties are defined in nutch-default.xml but can be redefined
> (overridden) in nutch-site.xml or from command-line (-Dproperty=value). In
> addition, property definitions can include other properties
> ({{${property.name}}}) which makes it sometimes hard to figure out what the
> actual value of a property is.
> In short, a command-line tool which lists all properties and the configured
> values could be useful.
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