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https://issues.apache.org/jira/browse/SOLR-3535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13294500#comment-13294500
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Yonik Seeley commented on SOLR-3535:
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bq. At first blush, I think we'd want a single SolrInputDocument passing
through the update processor chain AddUpdateCommand, and that document would be
nested. You'd need to keep that entire nested structure as a single unit for
as long as possible I think.
Yes, exactly. That also gives the most power... update processors that care
about the structure of the nested documents can get to it.
bq. But of course there are cons.... update processors would need to coded to
handle nested documents explicitly,
The necessity to treat multiple docs as a single update introduce complexity
into the update processor chain regardless. If not a nested SolrInputDocument,
then we'd need to pass along a List<SolrInputDocument> to keep them together
anyway, and document mutating processors would need to change to iterate over
this list. For simple mutating processors, we can have a utility class that
visits each document.
Of course the biggest benefit of treating as a single document means that all
the solr cloud stuff we've done (transaction log recovery, peer sync, update
forwarding, per-doc replication, etc, should all just work)
> Add block support for XMLLoader
> -------------------------------
>
> Key: SOLR-3535
> URL: https://issues.apache.org/jira/browse/SOLR-3535
> Project: Solr
> Issue Type: Sub-task
> Components: update
> Affects Versions: 4.1, 5.0
> Reporter: Mikhail Khludnev
> Priority: Minor
> Attachments: SOLR-3535.patch
>
>
> I'd like to add the following update xml message:
> <add-block>
> <doc>....</doc>
> <doc>....</doc>
> </add-block>
> out of scope for now:
> * other update formats
> * update log support (NRT), should not be a big deal
> * overwrite feature support for block updates - it's more complicated, I'll
> tell you why
> Alt
> * wdyt about adding attribute to the current tag {pre}<add block="true">{pre}
> * or we can establish RunBlockUpdateProcessor which treat every <add>
> ....</add> as a block.
> *Test is included!!*
> How you'd suggest to improve the patch?
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