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https://issues.apache.org/jira/browse/NUTCH-3100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17911470#comment-17911470
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Hudson commented on NUTCH-3100:
-------------------------------

SUCCESS: Integrated in Jenkins build Nutch » Nutch-trunk #185 (See 
[https://ci-builds.apache.org/job/Nutch/job/Nutch-trunk/185/])
NUTCH-3100 HostDB to support minimum records per host (markus: 
[https://github.com/apache/nutch/commit/b52ec9025e40152b3a1dae7c78bb803c7ad298ce])
* (edit) src/java/org/apache/nutch/hostdb/UpdateHostDb.java
* (edit) src/java/org/apache/nutch/hostdb/UpdateHostDbReducer.java


> HostDB to support minimum records per host
> ------------------------------------------
>
>                 Key: NUTCH-3100
>                 URL: https://issues.apache.org/jira/browse/NUTCH-3100
>             Project: Nutch
>          Issue Type: Improvement
>          Components: hostdb
>    Affects Versions: 1.20
>            Reporter: Markus Jelsma
>            Assignee: Markus Jelsma
>            Priority: Major
>             Fix For: 1.21
>
>         Attachments: NUTCH-3100.patch
>
>
> One of our crawls contains millions of hosts. Reading a HostDB this in the 
> Generator eats quite a bit of memory. We only tune the Generator using HostDB 
> for large hosts, so if we limit records being recorded in the HostDB using a 
> minimum number of URLS/host, our HostDB gets considerably smaller.
>  
> Adds -urlLimit <N> to UpdateHostDB tool. Only hosts having at least N records 
> will be recorded.



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