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From Sami Sierla <sami.sie...@poplatek.fi>
Subject Re: CouchDB 1.2.0 indexing dies silently
Date Wed, 06 Jun 2012 05:18:50 GMT
Checked the logs, you're right, there is duplicated (for each view) part in "server state".

-Sami
On Jun 5, 2012, at 11:05 PM, Paul Davis wrote:

> Did you cut and paste this log transcript with multiple pastes?
> There's a really weird view repetition but I'm going to just assume
> that you accidentally overlapped a copy/paste into email for now.
> 
> On Tue, Jun 5, 2012 at 5:07 AM, Sami Sierla <sami.sierla@poplatek.fi> wrote:
>> Dave,
>> 
>> Thank You for quick reply. The issues appear in a production environment to which
I don't have access to modify configuration or design documents. Log level at the moment is
"error"
>> 
>> Below is a lengthy log dump we got when the os_process_timeout was 5000, after increasing
timeout to 30000 there has been no log entries at all when indexing stops.
>> 
>> -----
>> 
>> [Thu, 31 May 2012 17:42:17 GMT] [error] [<0.15656.0>] OS Process Error <0.15657.0>
:: {os_process_error, "OS process timed out."}
>> [Thu, 31 May 2012 17:42:17 GMT] [error] [emulator] Error in process <0.15656.0>
with exit value: {{nocatch,{os_process_error,"OS process timed out."}},[{couch_os_process,prompt,2},{couch_query_servers,map_doc_raw,2},{couch_view_updater,'-do_maps/3-fun-0-',3},{couch_view_updater,do_maps,3}]}
>> [Thu, 31 May 2012 17:42:17 GMT] [error] [<0.15648.0>] ** Generic server <0.15648.0>
terminating
>> ** Last message in was {'EXIT',<0.15653.0>,
>>                           {{nocatch,
>>                                {os_process_error,"OS process timed out."}},
>>                            [{couch_os_process,prompt,2},
>>                             {couch_query_servers,map_doc_raw,2},
>>                             {couch_view_updater,'-do_maps/3-fun-0-',3},
>>                             {couch_view_updater,do_maps,3}]}}
>> ** When Server state == {group_state,undefined,<<"mutka_replicated">>,
>>                         {"/data/mutka/couchdb-index",<<"mutka_replicated">>,
>>                          {group,
>>                           <<223,185,95,248,235,18,77,64,18,164,253,96,95,237,
>>                             204,20>>,
>>                           nil,<<"_design/transactionA-1.2.0">>,
>>                           <<"javascript">>,[],
>>                           [{view,0,0,0,
>>                             [<<"transactionByPaymentInstrument">>],
>>                             <<"function(doc) { if (doc.objectType == \"ProtocolTransaction\"
&& doc.paymentInstrumentId) { emit([doc.paymentInstrumentId,doc.startTimestamp], null);
} }">>,
>>                             nil,[],[]},
>>                            {view,1,0,0,
>>                             [<<"transactionByTerminal">>],
>>                             <<"function(doc) { if (doc.objectType == \"ProtocolTransaction\"
&& doc.paymentTerminalId) { emit([doc.paymentTerminalId,doc.startTimestamp], null);
} }">>,
>>                             nil,[],[]},
>>                            {view,2,0,0,
>>                             [<<"transactionBySession">>],
>>                             <<"function(doc) { if (doc.objectType == \"ProtocolTransaction\"
&& doc.protocolSessionId) { emit(doc.protocolSessionId,doc.protocolTransactionId);
} }">>,
>>                             nil,[],[]},
>>                            {view,3,0,0,
>>                             [<<"transactionByRayId">>],
>>                             <<"function(doc) { if (doc.objectType == \"ProtocolTransaction\"
&& doc.cId) { emit([-(-doc.cId),doc.startTimestamp], null); } }">>,
>>                             nil,[],[]}],
>>                           {[]},
>>                           nil,0,0,nil,nil}},
>>                         {group,
>>                          <<223,185,95,248,235,18,77,64,18,164,253,96,95,237,
>>                            204,20>>,
>>                          <0.15650.0>,<<"_design/transactionA-1.2.0">>,
>>                          <<"javascript">>,[],
>>                          [{view,0,236439939,0,
>>                            [<<"transactionByPaymentInstrument">>],
>>                            <<"function(doc) { if (doc.objectType == \"ProtocolTransaction\"
&& doc.paymentInstrumentId) { emit([doc.paymentInstrumentId,doc.startTimestamp], null);
} }">>,
>>                            {btree,<0.15650.0>,
>>                             {47573274456,{8694059,[]},257926106},
>>                             #Fun<couch_btree.3.71804109>,
>>                             #Fun<couch_btree.4.115144917>,
>>                             #Fun<couch_view.less_json_ids.2>,
>>                             #Fun<couch_view_group.10.26766604>,snappy},
>>                            [],[]},
>>                           {view,1,236439939,0,
>>                            [<<"transactionByTerminal">>],
>>                            <<"function(doc) { if (doc.objectType == \"ProtocolTransaction\"
&& doc.paymentTerminalId) { emit([doc.paymentTerminalId,doc.startTimestamp], null);
} }">>,
>>                            {btree,<0.15650.0>,
>>                             {47574093427,{33638477,[]},942288018},
>>                             #Fun<couch_btree.3.71804109>,
>>                             #Fun<couch_btree.4.115144917>,
>>                             #Fun<couch_view.less_json_ids.2>,
>>                             #Fun<couch_view_group.10.26766604>,snappy},
>>                            [],[]},
>>                           {view,2,236439939,0,
>>                            [<<"transactionBySession">>],
>>                            <<"function(doc) { if (doc.objectType == \"ProtocolTransaction\"
&& doc.protocolSessionId) { emit(doc.protocolSessionId,doc.protocolTransactionId);
} }">>,
>>                            {btree,<0.15650.0>,
>>                             {47574114746,{9241366,[]},131141244},
>>                             #Fun<couch_btree.3.71804109>,
>>                             #Fun<couch_btree.4.115144917>,
>>                             #Fun<couch_view.less_json_ids.2>,
>>                             #Fun<couch_view_group.10.26766604>,snappy},
>>                            [],[]},
>>                           {view,1,236439939,0,
>>                            [<<"transactionByTerminal">>],
>>                            <<"function(doc) { if (doc.objectType == \"ProtocolTransaction\"
&& doc.paymentTerminalId) { emit([doc.paymentTerminalId,doc.startTimestamp], null);
} }">>,
>>                            {btree,<0.15650.0>,
>>                             {47574093427,{33638477,[]},942288018},
>>                             #Fun<couch_btree.3.71804109>,
>>                             #Fun<couch_btree.4.115144917>,
>>                             #Fun<couch_view.less_json_ids.2>,
>>                             #Fun<couch_view_group.10.26766604>,snappy},
>>                            [],[]},
>>                           {view,2,236439939,0,
>>                            [<<"transactionBySession">>],
>>                            <<"function(doc) { if (doc.objectType == \"ProtocolTransaction\"
&& doc.protocolSessionId) { emit(doc.protocolSessionId,doc.protocolTransactionId);
} }">>,
>>                            {btree,<0.15650.0>,
>>                             {47574114746,{9241366,[]},131141244},
>>                             #Fun<couch_btree.3.71804109>,
>>                             #Fun<couch_btree.4.115144917>,
>>                             #Fun<couch_view.less_json_ids.2>,
>>                             #Fun<couch_view_group.10.26766604>,snappy},
>>                            [],[]},
>>                           {view,3,236433956,0,
>>                            [<<"transactionByRayId">>],
>>                            <<"function(doc) { if (doc.objectType == \"ProtocolTransaction\"
&& doc.cId) { emit([-(-doc.cId),doc.startTimestamp], null); } }">>,
>>                            {btree,<0.15650.0>,
>>                             {47559121340,{2250018,[]},76590679},
>>                             #Fun<couch_btree.3.71804109>,
>>                             #Fun<couch_btree.4.115144917>,
>>                             #Fun<couch_view.less_json_ids.2>,
>>                             #Fun<couch_view_group.10.26766604>,snappy},
>>                            [],[]}],
>>                          {[]},
>>                          {btree,<0.15650.0>,
>>                           {47572622835,[],1061098089},
>>                           #Fun<couch_btree.3.71804109>,
>>                           #Fun<couch_btree.4.115144917>,
>>                           #Fun<couch_btree.5.93788370>,nil,snappy},
>>                          236439939,0,nil,nil},
>>                         <0.15653.0>,nil,false,
>>                         [{{<0.15441.0>,#Ref<0.0.0.182446>},409571621}],
>>                         <0.15652.0>,false}
>> ** Reason for termination ==
>> ** {os_process_error,"OS process timed out."}
>> [Thu, 31 May 2012 17:42:17 GMT] [error] [<0.15648.0>] {error_report,<0.31.0>,
>>                       {<0.15648.0>,crash_report,
>>                        [[{initial_call,
>>                           {couch_view_group,init,['Argument__1']}},
>>                          {pid,<0.15648.0>},
>>                          {registered_name,[]},
>>                          {error_info,
>>                           {exit,
>>                            {os_process_error,"OS process timed out."},
>>                            [{gen_server,terminate,6},
>>                             {proc_lib,init_p_do_apply,3}]}},
>>                          {ancestors,[<0.15647.0>]},
>>                          {messages,[]},
>>                          {links,[<0.15650.0>,<0.123.0>]},
>>                          {dictionary,[]},
>>                          {trap_exit,true},
>>                          {status,running},
>>                          {heap_size,2584},
>>                          {stack_size,24},
>>                          {reductions,18059924}],
>>                         []]}}
>> [Thu, 31 May 2012 17:42:17 GMT] [error] [<0.15441.0>] Uncaught server error:
{os_process_error, <<"OS process timed out.">>}
>> [Thu, 31 May 2012 17:42:17 GMT] [error] [<0.15650.0>] ** Generic server <0.15650.0>
terminating
>> ** Last message in was {'EXIT',<0.15648.0>, {os_process_error,"OS process timed
out."}}
>> ** When Server state == {file,{file_descriptor,prim_file,{#Port<0.2119>,19}},
47574426987}
>> ** Reason for termination ==
>> ** {os_process_error,"OS process timed out."}
>> [Thu, 31 May 2012 17:42:17 GMT] [error] [<0.15650.0>] {error_report,<0.31.0>,
>>                       {<0.15650.0>,crash_report,
>>                        [[{initial_call,{couch_file,init,['Argument__1']}},
>>                          {pid,<0.15650.0>},
>>                          {registered_name,[]},
>>                          {error_info,
>>                           {exit,
>>                            {os_process_error,"OS process timed out."},
>>                            [{gen_server,terminate,6},
>>                             {proc_lib,init_p_do_apply,3}]}},
>>                          {ancestors,[<0.15648.0>,<0.15647.0>]},
>>                          {messages,[{'EXIT',<0.15652.0>,shutdown}]},
>>                          {links,[]},
>>                          {dictionary,[]},
>>                          {trap_exit,true},
>>                          {status,running},
>>                          {heap_size,2584},
>>                          {stack_size,24},
>>                          {reductions,27732395236}],
>>                         []]}}
>> 
>> 
>> -Sami
>> On Jun 5, 2012, at 12:23 PM, Dave Cottlehuber wrote:
>> 
>>> On 5 June 2012 11:13, Sami Sierla <sami.sierla@poplatek.fi> wrote:
>>>> Hi,
>>>> 
>>>> We have a rather large database (about 90 million documents /200GB) running
on CouchDB (1.0.3) and we're now updating it to version 1.2.0 due to view compaction problems
(large view group compactions never finished).
>>>> 
>>>> At the moment we are rebuilding (JavaScript) views with 1.2.0 but during
this we have stumbled upon to new problem : indexer processes suddenly just disappear. Initially
we got "OS Process Timeout" -errors to log but after adjusting os_process_timeout to 30secs
indexing still prematurely stops but without any log entry.
>>>> 
>>>> Any ideas what might cause this behavior?
>>>> 
>>>> CouchDB is running on RHEL 5.8 and is statically linked with SpiderMonkey
1.8.5
>>>> 
>>>> 
>>>> Regards,
>>>> Sami Sierla / Poplatek Oy / Finland
>>> 
>>> Sami,
>>> 
>>> Have you anything useful in the couch.log file? Are you able to run
>>> the view generation in debug mode (might not be possible due to disk
>>> space constraints  & performance impact).
>>> 
>>> Also, if you query the view with ?limit=1&descending=true you'll get
>>> the last doc that couch successfully processed (I think). Is there
>>> anything special about that or the subsequent documents? If you
>>> process the view & those docs manually into node or js.exe directly
>>> [1] does that work?
>>> 
>>> There's quite a few changes in 1.0.3 -> 1.2.0 including better
>>> detection of ill-formed docs amongst others, more info will help
>>> narrow this down.
>>> 
>>> A+
>>> Dave
>>> 
>>> [1]: http://wiki.apache.org/couchdb/Troubleshooting#Map.2BAC8-Reduce_debugging
>> 


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