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https://issues.apache.org/jira/browse/SOLR-17635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17985988#comment-17985988
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ASF subversion and git services commented on SOLR-17635:
--------------------------------------------------------

Commit 06768041f9223d64e1f07ad821bc2aec269b285b in solr's branch 
refs/heads/main from Renato Haeberli
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=06768041f92 ]

SOLR-17635: solr.solrj.javabin.readMapAsNamedList=true opt-in (#3163)

javabin format: provide option to decode maps as SimpleOrderedMap (a NamedList 
& Map)
  instead of LinkedHashMap.  Intended to aid in 10.x compatibility.  Enable via 
sys prop: solr.solrj.javabin.readMapAsNamedList=true

> javabin should deserialize maps as SimpleOrderedMap
> ---------------------------------------------------
>
>                 Key: SOLR-17635
>                 URL: https://issues.apache.org/jira/browse/SOLR-17635
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: David Smiley
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 7h 10m
>  Remaining Estimate: 0h
>
> Once SimpleOrderedMap actually implements Map (SOLR-17623), Solr's "javabin" 
> format should deserialize all maps as a SimpleOrderedMap.  This will make it 
> easier to transition away from NamedList/SimpleOrderedMap in responses (such 
> as to a Map or MapWriter) without worry of impacting javabin clients that 
> still expect a NamedList.  
> It may also increase deserialization performance & lower memory at the 
> expense of any former Maps (thus were deserialized as LinkedHashMap, O(1) 
> lookup) becoming O(N) lookup.



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