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https://issues.apache.org/jira/browse/SOLR-6732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14231650#comment-14231650
 ] 

ASF subversion and git services commented on SOLR-6732:
-------------------------------------------------------

Commit 1642917 from [~thelabdude] in branch 'dev/trunk'
[ https://svn.apache.org/r1642917 ]

SOLR-6732: back compat support needed in trunk and 5x to support upgrades from 
4.10.1 to 5x

> Back-compat break for LIR state in 4.10.2
> -----------------------------------------
>
>                 Key: SOLR-6732
>                 URL: https://issues.apache.org/jira/browse/SOLR-6732
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 4.10.2
>            Reporter: Shalin Shekhar Mangar
>            Assignee: Timothy Potter
>            Priority: Blocker
>             Fix For: 4.10.3
>
>         Attachments: SOLR-6732.patch, SOLR-6732.patch
>
>
> We changed the LIR state to be kept as a map but it is not back-compatible. 
> The problem is that we're checking for map or string after parsing JSON but 
> if the key has "down" as a string then json parsing will fail.
> This was introduced in SOLR-6511. This error will prevent anyone from 
> upgrading to 4.10.2
> http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201411.mbox/%3c54636ed2.8040...@cytainment.de%3E



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