Alexander Shorin created COUCHDB-1638:
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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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