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https://issues.apache.org/jira/browse/SOLR-6633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14217243#comment-14217243
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Alexandre Rafalovitch commented on SOLR-6633:
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This is truly just storing original document, right? And only returning the
whole thing as well?
Because, in Elasticsearch, the *_src* field is actually used as source for
several operations. For example, it is as a source for dynamic update as - by
default - fields are not stored individually. And, I think, *_src* field also
gets re-written/re-created on update, again because it is actually used as a
source of truth.
The second issue I wanted to raise is how this will interplay with
UpdateRequestProcessors (ES does not really have those). I guess URPs will
apply after the content of the field, so the actual fields may look quite
different from what's in the *_src*.
Finally, I am not clear on what this really means: ??all fields go into the
'df'?? . Do we mean, there is a magic copyField or something?
I think we need a bit more specific use-case here, then just an
implementation/configuration. Especially, since a similar-but-different
implementation in Elasticsearch does not fully match Solr's setup.
> let /update/json/docs store the source json as well
> ---------------------------------------------------
>
> Key: SOLR-6633
> URL: https://issues.apache.org/jira/browse/SOLR-6633
> Project: Solr
> Issue Type: Bug
> Reporter: Noble Paul
> Assignee: Noble Paul
> Labels: EaseOfUse
> Fix For: 5.0, Trunk
>
> Attachments: SOLR-6633.patch, SOLR-6633.patch
>
>
> it is a common requirement to store the entire JSON as a field in Solr.
> we can have a extra param srcField=field_name to specify the field name
> the /update/json/docs is only useful when all the json fields are predefined
> or in schemaless mode.
> The better option would be to store the content in a store only field and
> index the data in another field in other modes
> the relevant section in solrconfig.xml
> {code:xml}
> <initParams path="/update/json/docs">
> <lst name="defaults">
> <!--this ensures that the entire json doc will be stored verbatim into
> one field-->
> <str name="srcField">_src</str>
> <!--This means a the uniqueKeyField will be extracted from the fields
> and
> all fields go into the 'df' field. In this config df is already
> configured to be 'text'
> -->
> <str name="mapUniqueKeyOnly">true</str>
> </lst>
> </initParams>
> {code}
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