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From "Robert Newson (JIRA)" <j...@apache.org>
Subject [jira] Created: (COUCHDB-808) Zero byte .compact file prevents compaction
Date Wed, 23 Jun 2010 17:30:56 GMT
Zero byte .compact file prevents compaction
-------------------------------------------

                 Key: COUCHDB-808
                 URL: https://issues.apache.org/jira/browse/COUCHDB-808
             Project: CouchDB
          Issue Type: Bug
          Components: Database Core
    Affects Versions: 0.11
            Reporter: Robert Newson


Couchdb can make a .compact file when the volume is almost out of disk
space and then crash before writing the header.

If you then clean some space and try to compact again, it won't ever work.

[Wed, 23 Jun 2010 16:11:59 GMT] [error] [emulator] Error in process
<0.1976.0> with exit value:
{{badmatch,no_valid_header},[{couch_db_updater,start_copy_compact,1}]}

The presence of the invalid .compact file prevents it, and needs to be
manually removed.

Remedy: delete the .compact file if there is no valid header when _compact is called for the
second time.

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