[SOLR-3146] Create migration guide from 3.x to 4.0

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Fix Version/s: 4.2, 6.0
• Component/s: documentation
• Assignee: Unassigned
• Reporter: Jan Høydahl
• Created: 20/Feb/12 14:58
• Updated: 09/May/16 18:48
• Resolved: 21/Jan/13 20:38

Description

Spinoff from SOLR-3141:

Perhaps an official migration guide on the CMS would be helpful too when 4.0 hits the road. Such a guide would be more in-depth than the upgrading notes in CHANGES. We could have a paragraph about optimize/forceMerge, and another paragraph about softCommit/commitWithin as preferred to explicit commit, which is also a huge mistake many people do, they do over-committing!

Issue Links

• is related to: SOLR-3141 Warn in logs at Optimize (was: Deprecate OPTIMIZE command in Solr)