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https://issues.apache.org/jira/browse/SOLR-13312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16789077#comment-16789077
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Noble Paul commented on SOLR-13312:
-----------------------------------
[~dsmiley] SolrDocument is an expensive data structure. Yes, we may need a more
efficient data structure to actually accomplish this. HashMaps are extremely
memory inefficient.
Skipping transformation is something we can't do now without backward
incompatibility. We can probably rewrite Transformers like ChildDocTransformer
to adapt to the new format. We may need to create the SolrDocument objects
where other transformers are used. But most requests never use any
transformers. They are paying a huge price
> write out responses without creating SolrDocument objects
> ---------------------------------------------------------
>
> Key: SOLR-13312
> URL: https://issues.apache.org/jira/browse/SOLR-13312
> Project: Solr
> Issue Type: Sub-task
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Noble Paul
> Priority: Major
>
> Once we get a document from lucene there is no need to create a SolrDocument
> object to write out the response, if there are no transformers
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