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From "Alexander Shorin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (COUCHDB-1638) Memory overwhelming usage on attachment uploading when disk space ran out
Date Sun, 06 Jan 2013 21:40:12 GMT
Alexander Shorin created COUCHDB-1638:
-----------------------------------------

             Summary: Memory overwhelming usage on attachment uploading when disk space ran
out
                 Key: COUCHDB-1638
                 URL: https://issues.apache.org/jira/browse/COUCHDB-1638
             Project: CouchDB
          Issue Type: Bug
            Reporter: Alexander Shorin


Uploading attachment that is bigger than disk space that left for CouchDB data causes unstoppable
memory consuming. For document updating in this case he just silently fails with {{badmatch,{error,enospc}}
in logs.

Steps to reproduce:
1. Simulate small disk. I've done it with next commands:
mkdir /var/lib/couchdb/sandbox
chown couchdb /var/lib/couchdb/sandbox
mount -t tmpfs -o size=20m tmpfs /var/lib/couchdb/sandbox
2. Create database with name e.g. sandbox/deadman
3. Create new document and upload attachment with size >=20MB
4. watch free and get ready to kill CouchDB

As for me CouchDB may easily consume 8GB RAM and 3GB of swap for described above conditions.

Expected behaviour: not so fatal.

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