Mailing-List: contact solr-commits-help@lucene.apache.org; run by ezmlm
Precedence: bulk
Reply-To: solr-dev@lucene.apache.org
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable
From: Apache Wiki <wikidiffs@apache.org>
To: Apache Wiki <wikidiffs@apache.org>
Date: Sun, 25 Oct 2009 22:59:10 -0000
Message-ID: <20091025225910.13344.22221@eos.apache.org>
Subject: 
 =?utf-8?q?=5BSolr_Wiki=5D_Trivial_Update_of_=22FAQ=22_by_YonikSeeley?=

Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Solr Wiki" for chan=
ge notification.

The "FAQ" page has been changed by YonikSeeley.
The comment on this change is: updates for more recent solr versions.
http://wiki.apache.org/solr/FAQ?action=3Ddiff&rev1=3D61&rev2=3D62

--------------------------------------------------

  =3D=3D What are the Requirements for running a Solr server? =3D=3D
  =

  Solr requires Java 1.5 and an Application server (such as Tomcat) which s=
upports the Servlet 2.4 standard.
- =

- The Replication features of Solr currently require an OS with the ability=
 to create hard links and rsync.
  =

  =3D=3D How can I get started playing with Solr? =3D=3D
  =

@@ -67, +65 @@

  =

  =3D=3D I POSTed some documents, why don't they show up when I search? =3D=
=3D
  =

- Documents that have been added to the index don't show up in search resul=
ts until a <commit/> message has been POSTed as well. This allows you to PO=
ST many documents in succession and know that none of them will be visible =
to search clients until you have finished. (Note however, that in some circ=
umstances users ''may'' see your changes even though you haven't POSTed a <=
commit/>. For instance, when Solr is restarted, some or even all of the doc=
s added since the last <commit/> may now show up in search results.)
+ Documents that have been added to the index don't show up in search resul=
ts until a commit is done (one way is to POST a <commit/> message to the XM=
L update handler). This allows you to POST many documents in succession and=
 know that none of them will be visible to search clients until you have fi=
nished.
  =

  =3D=3D How can I delete all documents from my index? =3D=3D
  =

@@ -76, +74 @@

  This has been optimized to be more efficient then deleting by some arbitr=
ary query which matches all docs because of the nature of the data.
  =

  =3D=3D How can I rebuild my index from scratch if I change my schema? =3D=
=3D
- =

- The most efficient/complete way is to...
- =

-  1. Stop your application server
-  1. Change your schema.xml file
-  1. Delete the `index` directory in your data directory
-  1. Start your application server (Solr will detect that there is no exis=
ting index and make a new one)
-  1. Re-Index your data
- =

- If the permission scheme of your server does not allow you to manually de=
lete the `index` directory an alternate technique is...
  =

   1. Stop your application server
   1. Change your schema.xml file
   1. Start your application server
-  1. Use the "match all docs" query in a delete by query command: {{{<dele=
te><query>*:*</query></delete>}}}
+  1. Delete the `index` directory in your data directory, or alternately u=
se the "match all docs" query in a delete by query command before shutting =
down Solr: {{{<delete><query>*:*</query></delete>}}}
   1. Send an {{{<optimize/>}}} command.
   1. Re-Index your data
  =

+ One can also delete all documents, change the schema.xml file, and then r=
eload the core w/o shutting down Solr.
- It's very important to send the "optimize" command before re-indexing.  E=
ven though you've deleted all the documents, some low level Lucene metadata=
 about the fields those documents had will still be there, and will influen=
ce how future documents with the same field names are indexed
- =

  =

  =3D=3D How can I update a specific field of an existing document? =3D=3D
 =20