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https://issues.apache.org/jira/browse/NUTCH-1832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14121467#comment-14121467
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Julien Nioche commented on NUTCH-1832:
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bq. Pointing at Doug's Crawl.java class isn't what I was stating. Here is what
I was stating.
I was pointing at the Crawl class to show that indexing has always been part of
the behaviour in response to your statement that Nutch did not require indexing
before.
bq. Old use case: 1. Download Nutch out of the Box. Don't need Solr. I can
simply "start Nutch" and its fetching, and if there was no Solr URL specified,
it would go through a full crawl (this was when ./bin/nutch crawl did something
- which it doesn't anymore - it tells you to use the crawl script). That is a
change. New use case: 1. Download Nutch out of the Box. Can't run Nutch
crawling (with the ./bin/crawl command, the only option since ./bin/nutch crawl
doesn't exist anymore). That is a change
The change was not to make the indexing mandatory (it already was) but to
remove the old indexing mechanism and delegate to SOLR. That was more than 3
years ago in Nutch 1.3, see in particular NUTCH-837 and
[https://issues.apache.org/jira/browse/NUTCH-837?focusedCommentId=12884731&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-12884731]
where you were part of the discussion and agreed that this was the right thing
to do.
Again, the crawl script does *exactly* the same thing as the Crawl command.
bq. BTW, are you saying that if I enable indexer-solr, that as long as the
system property for solrUrl isn't set, that it would not require Solr?
Yes. Activating a plugin does not create any dependency if that plugin is not
used, which would be the case if the indexing command is not called. Hence my
point that it should be reinstated as it does not do any harm (and is how it
worked so far).
> Make Nutch work without an indexer
> ----------------------------------
>
> Key: NUTCH-1832
> URL: https://issues.apache.org/jira/browse/NUTCH-1832
> Project: Nutch
> Issue Type: Bug
> Affects Versions: 1.9
> Reporter: Chris A. Mattmann
> Assignee: Chris A. Mattmann
> Fix For: 1.10
>
> Attachments: NUTCH-1832.Mattmann.090314.patch.2.txt,
> NUTCH-1832.Mattmann.090314.patch.txt
>
>
> Nutch used to work out of the box, without requiring an indexing backend. As
> of 1.9, that's not the case anymore (it's possible even before that). Thanks
> to [~markus17] for pointing out that this is due to the indexing-solr plugin
> being enabled by default. We should disable it by default, so that the
> regression is removed.
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