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From "yuanyun.cn (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-3946) Support delta import in SolrEntityProcessor
Date Mon, 15 Oct 2012 15:30:02 GMT
yuanyun.cn created SOLR-3946:
--------------------------------

             Summary: Support delta import in SolrEntityProcessor
                 Key: SOLR-3946
                 URL: https://issues.apache.org/jira/browse/SOLR-3946
             Project: Solr
          Issue Type: Improvement
          Components: clients - java
    Affects Versions: 4.0
            Reporter: yuanyun.cn
            Priority: Minor
             Fix For: 4.1


SolrEntityProcessor is very useful to copy a part of index from central solr to another solr
server based on some query.
But its function is quite limited, doesn't support delta import, which is a quite useful feature,
for example:

One central solr server stores index of all docs, in the index we record information such
as owner, last_modified and etc. Then create a local cache solr server in client side which
only contains index of docs created by this user, so user can search his/her docs even when
there is no internet connection. After the first full import to copy index of doc created
by this user in last several weeks (or month), we want to update index in client's local solr
server consistently from the central server.

But now, we can't do this, as SolrEntityProcessor doesn't support delta-import - which already
supports in SqlEntityProcessor: using deltaQuery, deltaImportQuery to do delta-import, using
deletedPkQuery to remove deleted index when do delta-import.

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