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https://issues.apache.org/jira/browse/SOLR-5944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14171427#comment-14171427
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Shalin Shekhar Mangar commented on SOLR-5944:
---------------------------------------------

Hi [~mkhludnev], the replicas expect that the leader will send a fully expanded 
document and they can just add the document to the index as-is. That's not true 
when we're updating DocValues because we wouldn't want to lookup the stored 
fields at all if there were no non-updateable fields used in an atomic update 
request. This is why the DISTRIB_INPLACE_UPDATE is required.

bq. Perhaps, it's possible to better integrate it with the current atomic 
updates

That and performance is my only concern at this point. We can commit it if we 
can deal with the docid lookup in a better/cleaner way.


> Support updates of numeric DocValues
> ------------------------------------
>
>                 Key: SOLR-5944
>                 URL: https://issues.apache.org/jira/browse/SOLR-5944
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Ishan Chattopadhyaya
>            Assignee: Shalin Shekhar Mangar
>         Attachments: SOLR-5944.patch, SOLR-5944.patch, SOLR-5944.patch, 
> SOLR-5944.patch, SOLR-5944.patch, SOLR-5944.patch, SOLR-5944.patch, 
> SOLR-5944.patch
>
>
> LUCENE-5189 introduced support for updates to numeric docvalues. It would be 
> really nice to have Solr support this.



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