ACRA
CouchDB: Reduce output must shrink more rapidly
Hi,
I have an ACRA installation that was working properly for one app. Somehow it stopped working and we don't know why.
I don't quite understand ACRAlyzer internally so I don't understand which parts work and which parts don't. I'll try to post all the useful info I can think of.
If I try to open any tab I don't see any data about the bugs (the web shows OK). Opening firebug I can see the same error in all of the tabs: "reduce_overflow_error: Reduce output must shrink more rapidly". I can see the description of a bug we were working on in the preview (first 100 bytes).
If I click the "background polling" icon it starts moving but nothing happens on the page when new bugs arrive. I can see the request is the following: http://192.168.XXX.XXX:5984/acra-XXXXX/_changes?feed=longpoll&include_docs=true&since=18291. If I open that URL in a new tab and send a report, I can see it arrives and in the browser I get a json, apparently correct.
I've uploaded some screenshots here: http://imgur.com/a/4bsw8
CouchDB seems to be working OK. Every time I send a bug from the app I can see how "number of documents" increases by one.
If it helps... I managed to reproduce this issue (or a similar one)
Start with a database containing reports.
To produce the issue: 0- in acralyzer, go into one of the bugs and copy the direct link (you'll need it later to reverse) 1- enter a very large comment in the bug description window of that bug... for me, a comment with more than 1000 characters did the trick 2- hit save... everything looks normal 3- go to the dashboard tab 4- observe that Acralyzer displays no entries
To reverse the issue: 0- extract the record id from the link you copied at step 0 1- using futon locate and edit the record 2- remove the large description (need to hit the green check mark + save record) 3- go back to Acralyzer & observe that everything is back to normal
- Reproducible 100% of the time.
- Expected behavior: Acralyzer truncates the bug description to maximum length before saving to the record so that everything remains functional.
In couchDB.log ... the following error is observed when the error happens: 2320 [Thu, 12 Feb 2015 19:23:30 GMT] [info] [<0.643.83>] W.X.Y.Z - - GET /acra-testing/baca9544b7ed88e61ef895d2147a7d1a 200 2321 [Thu, 12 Feb 2015 19:23:30 GMT] [info] [<0.643.83>] W.X.Y.Z - - PUT /acra-testing/baca9544b7ed88e61ef895d2147a7d1a 201 2322 [Thu, 12 Feb 2015 19:23:30 GMT] [info] [<0.21394.82>] W.X.Y.Z - - GET /acra-testing/_changes?feed=longpoll&include_docs=true&since=224 200 2323 [Thu, 12 Feb 2015 19:23:33 GMT] [info] [<0.184.0>] Starting index update for db: acra-testing idx: _design/acra-storage 2324 [Thu, 12 Feb 2015 19:23:33 GMT] [info] [<0.29653.1>] OS Process #Port<0.2825> Log :: function raised exception (new TypeError("doc.BUILD is undefined", "undefined", 2)) with doc._id baca9544b7ed88e61ef895d2147a7d1a 2325 [Thu, 12 Feb 2015 19:23:33 GMT] [error] [<0.1543.83>] OS Process Error <0.29653.1> :: {<<"reduce_overflow_error">>, 2326 <<"Reduce output must shrink more rapidly: Current output: '[{"latest":1422947254000,"count":4,"solved":false,"description":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'... (first 100 of 1162 bytes)">>} 2327 [Thu, 12 Feb 2015 19:23:33 GMT] [error] [emulator] Error in process <0.1543.83> with exit value: {{nocatch,{<<21 bytes>>,<<187 bytes>>}},[{couch_os_process,prompt,2,[{file,"couch_os_process.erl"},{line,57}]},{couch_query_servers,proc_prompt,2,[{file,"couch_query_servers.erl"},{line,511}]},{couch_query_servers,os_rereduce,3,[{file,"couch_query... 2328 2329 2330 [Thu, 12 Feb 2015 19:23:33 GMT] [info] [<0.643.83>] W.X.Y.Z - - GET /acra-testing/_design/acra-storage/_view/reports-per-day?group_level=3 500 2331 [Thu, 12 Feb 2015 19:23:33 GMT] [error] [<0.643.83>] httpd 500 error response: 2332 {"error":"reduce_overflow_error","reason":"Reduce output must shrink more rapidly: Current output: '[{"latest":1422947254000,"count":4,"solved":false,"description":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'... (first 100 of 1162 bytes)"} 2333 2334 [Thu, 12 Feb 2015 19:23:33 GMT] [info] [<0.184.0>] Starting index update for db: acra-testing idx: _design/acra-storage 2335 [Thu, 12 Feb 2015 19:23:33 GMT] [info] [<0.29653.1>] OS Process #Port<0.2825> Log :: function raised exception (new TypeError("doc.BUILD is undefined", "undefined", 2)) with doc._id baca9544b7ed88e61ef895d2147a7d1a 2336 [Thu, 12 Feb 2015 19:23:33 GMT] [error] [<0.1549.83>] OS Process Error <0.29653.1> :: {<<"reduce_overflow_error">>, 2337 <<"Reduce output must shrink more rapidly: Current output: '[{"latest":1422947254000,"count":4,"solved":false,"description":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'... (first 100 of 1162 bytes)">>} 2338 [Thu, 12 Feb 2015 19:23:33 GMT] [error] [emulator] Error in process <0.1549.83> with exit value: {{nocatch,{<<21 bytes>>,<<187 bytes>>}},[{couch_os_process,prompt,2,[{file,"couch_os_process.erl"},{line,57}]},{couch_query_servers,proc_prompt,2,[{file,"couch_query_servers.erl"},{line,511}]},{couch_query_servers,os_rereduce,3,[{file,"couch_query... 2339 2340 2341 [Thu, 12 Feb 2015 19:23:33 GMT] [info] [<0.649.83>] W.X.Y.Z - - GET /acra-testing/_design/acra-storage/_view/recent-items?descending=true&limit=10 500 2342 [Thu, 12 Feb 2015 19:23:33 GMT] [info] [<0.32063.82>] W.X.Y.Z - - GET /acra-testing/_design/acra-storage/_view/bugs?descending=true&group=true 500 2343 [Thu, 12 Feb 2015 19:23:33 GMT] [info] [<0.32317.82>] W.X.Y.Z - - GET /acra-testing/_design/acra-storage/_view/reports-per-android-version?group_level=1 500 2344 [Thu, 12 Feb 2015 19:23:33 GMT] [error] [<0.649.83>] httpd 500 error response: 2345 {"error":"reduce_overflow_error","reason":"Reduce output must shrink more rapidly: Current output: '[{"latest":1422947254000,"count":4,"solved":false,"description":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'... (first 100 of 1162 bytes)"} 2346 2347 [Thu, 12 Feb 2015 19:23:33 GMT] [error] [<0.32063.82>] httpd 500 error response: 2348 {"error":"reduce_overflow_error","reason":"Reduce output must shrink more rapidly: Current output: '[{"latest":1422947254000,"count":4,"solved":false,"description":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'... (first 100 of 1162 bytes)"} 2349 2350 [Thu, 12 Feb 2015 19:23:33 GMT] [error] [<0.32317.82>] httpd 500 error response: 2351 {"error":"reduce_overflow_error","reason":"Reduce output must shrink more rapidly: Current output: '[{"latest":1422947254000,"count":4,"solved":false,"description":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'... (first 100 of 1162 bytes)"}
I had the same issue today. Took me an hour to figure out that this was. I left a description for a bug of 708 bytes which apparently is to long (just a few sentences though)
I pulled the id of the document from the couchdb log, then went to _utils and searched for the document id, doubleclicked the description and made it shorted.
Will this bug be fixed? Thanks
The error would not go away even after I updated the document description in the couchDB interface directly. I even deleted the document, but I was still getting the error occasionally. It was driving me crazy, that Futon pages loaded the views without an error and Acralyzer would still not load the page. I tried so many things, but I think the issue went away after I compacted the database and and the Views.
So if editing the description of the document fails to resolve the issue, try compacting the views and the database.
