Show returning zero length string results in scary errors
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Key: COUCHDB-593
URL: https://issues.apache.org/jira/browse/COUCHDB-593
Project: CouchDB
Issue Type: Bug
Components: JavaScript View Server
Affects Versions: 0.10
Environment: Ubuntu 9.10
Reporter: Roger Binns
If your show function returns a zero length string then several scary things
happen. Arguably the empty length string should just be returned to the
browser.
function (doc,req) { return "";}
On returning the zero length string, the following is displayed in the browser:
{ret_proc,{proc,<0.79.0>,<<\"javascript\">>,\n
{couch_os_process,prompt},\n
{couch_os_process,set_timeout},\n
{couch_os_process,stop}}}]}"}
The following is in the CouchDB log:
[Sun, 06 Dec 2009 22:10:15 GMT] [error] [<0.64.0>] OS Process Error ::
{render_error,<<"undefined response from show function">>}
[Sun, 06 Dec 2009 22:10:15 GMT] [error] [<0.53.0>] {error_report,<0.24.0>,
{<0.53.0>,supervisor_report,
[{supervisor,{local,couch_secondary_services}},
{errorContext,child_terminated},
{reason,normal},
{offender,[{pid,<0.58.0>},
{name,query_servers},
{mfa,{couch_query_servers,start_link,[]}},
{restart_type,permanent},
{shutdown,brutal_kill},
{child_type,worker}]}]}}
[Sun, 06 Dec 2009 22:10:15 GMT] [error] [<0.64.0>] Uncaught error in HTTP
request: {exit,
{normal,
{gen_server,call,
[couch_query_servers,
{ret_proc,
{proc,<0.79.0>,<<"javascript">>,
{couch_os_process,prompt},
{couch_os_process,set_timeout},
{couch_os_process,stop}}}]}}}
[Sun, 06 Dec 2009 22:10:15 GMT] [info] [<0.64.0>] Stacktrace:
[{gen_server,call,2},
{couch_query_servers,ret_os_process,1},
{couch_query_servers,render_doc_show,6},
{couch_httpd_show,'-send_doc_show_response/6-fun-0-',6},
{couch_httpd_db,do_db_req,2},
{couch_httpd,handle_request,5},
{mochiweb_http,headers,5},
{proc_lib,init_p_do_apply,3}]
[Sun, 06 Dec 2009 22:10:15 GMT] [info] [<0.64.0>] 127.0.0.1 - - 'GET'
/r/_design/rofroks/_show/index 500
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