Alexander Shorin created COUCHDB-1667:
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Summary: Gracefully update from view_index_dir to index_dir
Key: COUCHDB-1667
URL: https://issues.apache.org/jira/browse/COUCHDB-1667
Project: CouchDB
Issue Type: Bug
Reporter: Alexander Shorin
CouchDB 1.3 ships with new couch_index app[1] that uses `index_dir` config
option to locate directory to store view indexes. However, it replaces[2] old
`view_index_dir`option creating situation when recently updated default.ini
will have only `index_dir` option and old, but production used local.ini would
still have `view_index_dir`. There is a fallback[3], but there no insurance
that it will let user gracefully update.
This situation may leads to very bad situations, when all indexes will be
rebuilded against location that may not expects their on disk size (since
`view_index_dir` was pointed to the another mount point) which leads to server
fall.
[1]: https://git-wip-us.apache.org/repos/asf?p=couchdb.git;a=commit;h=35e57870
[2]: https://git-wip-us.apache.org/repos/asf?p=couchdb.git;a=commit;h=e83352f3
[3]:
https://github.com/apache/couchdb/blob/master/src/couch_index/src/couch_index_util.erl#L22
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