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https://issues.apache.org/jira/browse/COUCHDB-1654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13563783#comment-13563783
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Benoit Chesneau commented on COUCHDB-1654:
------------------------------------------
Just read the code and it seems that the index file signature is now based on
the indexer module name:
snippet from couch_index_util (l28):
index_dir(Module, DbName) when is_binary(DbName) ->
DbDir = "." ++ binary_to_list(DbName) ++ "_design",
filename:join([root_dir(), DbDir, Module]);
index_dir(Module, #db{}=Db) ->
index_dir(Module, couch_db:name(Db)).
index_file(Module, DbName, FileName) ->
filename:join(index_dir(Module, DbName), FileName).
Also the path is now based on the module name. So we have two things:
1. signature chane
2. old index file can't be found since the path changed.
Not sure what is the best way to solve that.... For example how do we manage
other index if we don't change the path accordingly?
> couchdb view sig changed
> ------------------------
>
> Key: COUCHDB-1654
> URL: https://issues.apache.org/jira/browse/COUCHDB-1654
> Project: CouchDB
> Issue Type: Bug
> Components: Database Core
> Reporter: Robert Newson
> Priority: Blocker
> Fix For: 1.3
>
>
> view sigs and location changed between 1.2.x and 1.3.x, which would cause
> full rebuilds.
> to be clear: upgrading to 1.3 should not cause a view to rebuild from scratch.
> ➜ couchdb git:(1.3.x) find tmp
> tmp
> tmp/lib
> tmp/lib/.db1_design
> tmp/lib/.db1_design/0761939631be54bf36d3ed9172bcf689.view
> tmp/lib/.delete
> tmp/lib/_replicator.couch
> tmp/lib/_users.couch
> tmp/lib/db1.couch
> tmp/log
> tmp/log/couch.log
> tmp/run
> tmp/run/couch.uri
> tmp/run/couchdb
> ➜ couchdb git:(1.3.x) find tmp
> tmp
> tmp/lib
> tmp/lib/.db1_design
> tmp/lib/.db1_design/0761939631be54bf36d3ed9172bcf689.view
> tmp/lib/.db1_design/mrview
> tmp/lib/.db1_design/mrview/641ce136c0f1dbe93aa94d3a419a0efe.view
> tmp/lib/.delete
> tmp/lib/_replicator.couch
> tmp/lib/_users.couch
> tmp/lib/db1.couch
> tmp/log
> tmp/log/couch.log
> tmp/run
> tmp/run/couch.uri
> tmp/run/couchdb
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