[COUCHDB-452] couch logs an [error] record if a client disconnects

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Assignee: Unassigned
• Reporter: Mark Hammond
• Created: 05/Aug/09 01:31
• Updated: 12/Oct/09 00:05
• Resolved: 12/Oct/09 00:05

Description

If a client makes a request which returns multiple rows (eg, a query) but disconnects before reading the response, couch logs:

[error] [<0.66.0>] Uncaught error in HTTP request:

{exit,normal}

[info] [<0.66.0>] Stacktrace: [

{mochiweb_request,send,2}

,

{couch_httpd,send_chunk,2}

,

{couch_httpd_view,send_json_view_row,5}

,

{couch_httpd_view,'-make_view_fold_fun/6-fun-0-',12}

,

{couch_view,fold_fun,4}

,

{couch_btree,stream_kv_node2,7}

,

{couch_btree,stream_kp_node,7}

,

{couch_btree,fold,5}

]

This could lead someone to conclude couch has an error which is not correct. A simple [info] record recording the premature normal exit is probably more appropriate.

FYI, the easiest way I found to repro this was to execute:

% python -c "import urllib; urllib.urlopen('http://127.0.0.1:5984/your_db/_design/your_design_doc/_view/your_view?reduce=false').close()"

which causes Python to open a connection and close it without reading anything. I'll attach a patch as suggested generally by jchris.

Issue Links

• duplicates: COUCHDB-394 Intermittent HTTP 500 errors on queries, no useful diagnostics