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From Anuj Lal <>
Subject solr upgrade to 5.5 from 4.4
Date Sat, 26 Mar 2016 23:53:53 GMT
I have made changes as listed in document ( sol.xml,, schema changes) before
i did upgrade
I am using solrcloud deployment
Doing node by node upgrade.
Almost everything work fine. Except if new upgraded  node ( node which is upgraded to 5.5)
become leader than even if that node goes down other node ( node which is still in 4.4) is
not coming as leader. In admin ui, down node continues as leader node

Also if upgraded node is 5.5 and leader, index can still be replicated to other other active
4.4 node? Will system work if 5.5 leader goes down? 
Has anyone done 4.x to 5.x rolling upgrade?

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