[COUCHDB-814] Improve error logging

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 0.10
• Component/s: Logging, View Server Support

Environment

Ubuntu Lucid Lynx

• Skill Level: Regular Contributors Level (Easy to Medium)
• Assignee: Unassigned
• Reporter: Julian Moritz
• Created: 04/Jul/10 09:42
• Updated: 02/Sep/18 06:31
• Resolved: 02/Sep/18 06:31

Description

When defining the path to a view server and using a non-existing target, the error message in my case was

[Sun, 04 Jul 2010 08:48:06 GMT] [error] [<0.108.0>] ** Generic server
<0.108.0> terminating

• • Last message in was {'EXIT',<0.111.0>,epipe}
  • When Server state == {group_state,undefined,<<"web">>,
    {"/var/lib/couchdb/0.10.0",<<"web">>,
    {group,

<<54,48,77,50,3,129,147,16,223,202,27,98,9,139,74,
233>>,

{db,<0.71.0>,<0.72.0>,nil,<<"1278233277155316">>,
<0.69.0>,<0.75.0>,
{db_header,4,16,0,
{738330,{8,1}},

{739403,9},
nil,0,nil,nil,1000},
16,
{btree,<0.69.0>,
{738330,{8,1}},
#Fun<couch_db_updater.8.117532479>,
#Fun<couch_db_updater.9.105507025>,
#Fun<couch_db_updater.7.32442936>,
#Fun<couch_db_updater.10.43662179>},
{btree,<0.69.0>,
{739403,9}

,
#Fun<couch_db_updater.11.41695917>,
#Fun<couch_db_updater.12.6934644>,
#Fun<couch_btree.5.124754102>,
#Fun<couch_db_updater.13.28245598>},

{btree,<0.69.0>,nil,#Fun<couch_btree.0.83553141>, #Fun<couch_btree.1.30790806>, #Fun<couch_btree.2.124754102>,nil}

,

16,<<"web">>,"/var/lib/couchdb/0.10.0/web.couch",
[],[],nil,

{user_ctx,null,[]},
nil,1000,
[before_header,after_header,on_file_open]},
nil,<<"_temp">>,<<"python">>,[],
[{view,0, [<<"_temp">>], <<"def fun(doc):\n yield None, doc">>,nil,[]}],
nil,0,0,nil,nil}},
{group,

<<54,48,77,50,3,129,147,16,223,202,27,98,9,139,74,233>>,

{db,<0.71.0>,<0.72.0>,nil,<<"1278233277155316">>,
<0.69.0>,<0.75.0>,
{db_header,4,16,0,
{738330,{8,1}},
{739403,9},
nil,0,nil,nil,1000},
16,
{btree,<0.69.0>,
{738330,{8,1}},
#Fun<couch_db_updater.8.117532479>,
#Fun<couch_db_updater.9.105507025>,
#Fun<couch_db_updater.7.32442936>,
#Fun<couch_db_updater.10.43662179>},
{btree,<0.69.0>,
{739403,9},
#Fun<couch_db_updater.11.41695917>,
#Fun<couch_db_updater.12.6934644>,
#Fun<couch_btree.5.124754102>,
#Fun<couch_db_updater.13.28245598>},
{btree,<0.69.0>,nil,#Fun<couch_btree.0.83553141>, #Fun<couch_btree.1.30790806>, #Fun<couch_btree.2.124754102>,nil},

16,<<"web">>,"/var/lib/couchdb/0.10.0/web.couch",
[],[],nil,
{user_ctx,null,[]}

,
nil,1000,
[before_header,after_header,on_file_open]},
<0.109.0>,<<"_temp">>,<<"python">>,[],
[{view,0,
[<<"_temp">>],
<<"def fun(doc):\n yield None, doc">>,

{btree,<0.109.0>,nil, #Fun<couch_btree.3.83553141>, #Fun<couch_btree.4.30790806>, #Fun<couch_view.less_json_keys.2>, #Fun<couch_view_group.11.46347864>}

,
[]}],

{btree,<0.109.0>,nil,#Fun<couch_btree.0.83553141>, #Fun<couch_btree.1.30790806>, #Fun<couch_btree.2.124754102>,nil}

,
0,0,nil,nil},
<0.111.0>,nil,false,
{{<0.74.0>,#Ref<0.0.0.673>},16},
<0.112.0>}

• • Reason for termination ==
  • epipe

Why not just printing a message like "ERROR: Path not found: /path/fo/file" ?

The way above makes it hard to guess the problem.

Issue Links

• is duplicated by: COUCHDB-2197 Invalid couchjs raises EPIPE, should raise (useful) ENOENT