[ https://issues.apache.org/jira/browse/SO
LR-139?page=com.atlassian.jira.plugin.system.issuetabpanels:
comment-tabpanel#action_12516473 ]
Yonik Seeley commented on SOLR-139:
-----------------------------------
So the big issue now is that I don't think we can use
getStoredFields() and do document modification outside the
update handler. The biggest reason is that I think we need
to be able to update documents atomically (in the sense that
updates should not be lost).
Consider the usecase of adding a new tag to a multi-valued
field: if two different clients tag a document at the same
time, it doesn't seem acceptable that one of the tags could
be lost. So I think that we need a modifyDocument() call on
updateHandler, and perhaps a ModifyUpdateCommand to go along
with it.
I'm not sure yet what this means for request processors.
Perhaps another method that handles the reloaded
storedFields?
> Support updateable/modifiable documents
> ---------------------------------------
>
> Key: SOLR-139
> URL: https:
//issues.apache.org/jira/browse/SOLR-139
> Project: Solr
> Issue Type: Improvement
> Components: update
> Reporter: Ryan McKinley
> Assignee: Ryan McKinley
> Attachments: getStoredFields.patch,
getStoredFields.patch, getStoredFields.patch,
getStoredFields.patch, getStoredFields.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-IndexDocumentCommand.patch,
SOLR-139-ModifyInputDocuments.patch,
SOLR-139-ModifyInputDocuments.patch,
SOLR-139-XmlUpdater.patch,
SOLR-269+139-ModifiableDocumentUpdateProcessor.patch
>
>
> It would be nice to be able to update some fields on a
document without having to insert the entire document.
> Given the way lucene is structured, (for now) one can
only modify stored fields.
> While we are at it, we can support incrementing an
existing value - I think this only makes sense for numbers.
> for background, see:
> http://www.nabble.com/loading-many-doc
uments-by-ID-tf3145666.html#a8722293
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