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From "Simon Lachinger (JIRA)" <>
Subject [jira] Commented: (SOLR-1708) Allowing import / update of a specific document using the data import handler
Date Tue, 12 Jan 2010 12:52:54 GMT


Simon Lachinger commented on SOLR-1708:

Well, the solution with ${dih.request.root-pk} generates duplicate configurations if users
want to user full-import, delta-imports, and imports with root-pk. And I doubt it will handle
the last_index_time correctly. This _kind_ of problems seems to be a pretty basic requirement
actually. And all workarounds I could google/think of required creating and maintaining duplicates
of the import queries. Which is quite bad.

I guess it would be better to have an additional command to allow these actions?

> Allowing import / update of a specific document using the data import handler
> -----------------------------------------------------------------------------
>                 Key: SOLR-1708
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>          Components: contrib - DataImportHandler
>    Affects Versions: 1.4
>            Reporter: Simon Lachinger
>         Attachments: 02-single-update.patch, 02-single-update.patch
> There is the need that changes or new documents need to be added immediately to the Solr
Index. This could easily done via the update-handler - however, when using the DataImportHandler
it shouldn't be necessary to specify the data extraction for the the DataImportHandler and
also for feeding it to into the update-handler. It should be centralized.
> Having to run delta query, identifying the changes, for changes where the ID's of the
updated documents are already known to the application is a rather costly (in terms of database
load) way to solve this.
> The attached patch allows to specify one or more query parameters for the delta-import
command, named 'root-pk', which allow to specify the document(s) to be updated or added.

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