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From "Paul Joseph Davis (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COUCHDB-86) (CouchDB on Windows) compaction can not be done.
Date Wed, 03 Feb 2010 15:59:27 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-86?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12829123#action_12829123
] 

Paul Joseph Davis commented on COUCHDB-86:
------------------------------------------

COUCHDB-67 is only an outline for a reasonable way to fix this. I don't think we'd need to
go to all the lengths that it proposed, but I don't know much about Windows file handling
other than "its different."

If there are any Windows devs with Erlang experience out there, help would definitely be appreciated
on this one. I for one don't even have access to a test machine to reproduce this problem.

> (CouchDB on Windows) compaction can not be done.
> ------------------------------------------------
>
>                 Key: COUCHDB-86
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-86
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Build System
>    Affects Versions: 0.8
>         Environment: Windows XP,    Erlang/OTP R12B-3
>            Reporter: Li Zhengji
>            Assignee: Paul Joseph Davis
>            Priority: Blocker
>             Fix For: 1.0
>
>   Original Estimate: 5h
>  Remaining Estimate: 5h
>
> During compacting, rename the current DB file to a .old file is not allowed on Windows.
> A possible workaround for this could be: 
> 1. Close current DB file (.couch);
> 2. Send db_updated to update to use .compact;
> 3. After 5sec, delete the .couch file;  ---- This is done in a linked process, after
that, this process send a message to update_loop;
> 4. After received the message in update_loop, close current DB file which is a .compact
file, then rename it to .couch;
> 5. Finally, db_updated again to use this new .couch file.
> Maybe, there would be a "pause" in service?

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