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From "Wong, Kai" <kaw...@akamai.com>
Subject Having purge problems
Date Sat, 03 Dec 2011 01:56:56 GMT
Hi,

I using bigcouch and ran into a purge problem very similar to that purge problem posted back
on May 3, 2010 with the same subject title. I'm wondering if the 'bug' that Chris referred
to has been fixed.

In my case, I have a bigcouch db with the standard 8 shards and 3 replicas each. I issued
a purge to one of the deleted document in one of the replica as follows:

> curl -d '{"kai_test1" : ["28-c3e23a0804e4a083e34e433037dfecf9" ] }' -H "Content-Type:
application/json" -X POST http://172.26.172.20:5986/shards%2F80000000-9fffffff%2Fkai_testdb.1320702717/_purge

and got:

{"error":"{{badarity,{#Fun<couch_db_updater.19.85972910>,\n            [{16,<<10,23,147,107,229,215,213,57,146,60,126,44,5,163,29,166>>},\n
            {leaf,true,790623,37,4,[]}]}},\n [{couch_key_tree,map_leafs_simple,3},\n  {couch_key_tree,map_leafs_simple,3},\n
 {couch_key_tree,map_leafs,2},\n  {couch_db_updater,'-handle_call/3-fun-2-',2},\n  {lists,mapfoldl,3},\n
 {couch_db_updater,handle_call,3},\n  {gen_server,handle_msg,5},\n  {proc_lib,init_p_do_apply,3}]}","reason":"{gen_server,call,\n
           [<0.173.0>,\n             {purge_docs,[{<<\"kai_test1\">>,\n
                          [{28,\n                             <<195,226,58,8,4,228,160,131,227,78,67,48,\n
                              55,223,236,249>>}]}]}]}"}

Inspecting the log file I found:

Log entries start --------------->
[Fri, 02 Dec 2011 19:16:01 GMT] [error] [<0.173.0>] [--------] ** Generic server <0.173.0>
terminating
** Last message in was {purge_docs,[{<<"kai_test1">>,
                                     [{28,
                                       <<195,226,58,8,4,228,160,131,227,
                                         78,67,48,55,223,236,249>>}]}]}
** When Server state == {db,<0.173.0>,nil,nil,<<"1321573786451211">>,
                            <0.172.0>,#Ref<0.0.0.323>,
                            {db_header,5,38,0,
                                {816239,{1,1,244}},
                                {816190,2},
                                {823388,[]},
                                4,816293,nil,1000},
                            38,
                            {btree,<0.172.0>,
                                {816239,{1,1,244}},
                                #Fun<couch_db_updater.btree_by_id_split.1>,
                                #Fun<couch_db_updater.btree_by_id_join.2>,
                                undefined,
                                #Fun<couch_db_updater.btree_by_id_reduce.2>},
                            {btree,<0.172.0>,
                                {816190,2},
                                #Fun<couch_db_updater.btree_by_seq_split.1>,
                                #Fun<couch_db_updater.btree_by_seq_join.2>,
                                undefined,
                                #Fun<couch_db_updater.btree_by_seq_reduce.2>},
                            {btree,<0.172.0>,
                                {823388,[]},
                                undefined,undefined,undefined,nil},
                            38,
                            <<"shards/80000000-9fffffff/kai_testdb.1320702717">>,
                            "/ghostcache/edgedata/data/shards/80000000-9fffffff/kai_testdb.1320702717.couch",
                            [],[],nil,
                            {user_ctx,null,[],undefined},
                            nil,1000,
                            [before_header,after_header,on_file_open],
                            false}
** Reason for termination ==
** {{badarity,{#Fun<couch_db_updater.19.85972910>,
               [{16,
                 <<10,23,147,107,229,215,213,57,146,60,126,44,5,163,29,166>>},
                {leaf,true,790623,37,4,[]}]}},
    [{couch_key_tree,map_leafs_simple,3},
     {couch_key_tree,map_leafs_simple,3},
     {couch_key_tree,map_leafs,2},
     {couch_db_updater,'-handle_call/3-fun-2-',2},
     {lists,mapfoldl,3},
     {couch_db_updater,handle_call,3},
     {gen_server,handle_msg,5},
     {proc_lib,init_p_do_apply,3}]}


[Fri, 02 Dec 2011 19:16:01 GMT] [error] [<0.173.0>] [--------] {error_report,<0.78.0>,
    {<0.173.0>,crash_report,
     [[{initial_call,{couch_db_updater,init,['Argument__1']}},
       {pid,<0.173.0>},
       {registered_name,[]},
       {error_info,
           {exit,
               {{badarity,
                    {#Fun<couch_db_updater.19.85972910>,
                     [{16,
                       <<10,23,147,107,229,215,213,57,146,60,126,44,5,163,29,
                         166>>},
                      {leaf,true,790623,37,4,[]}]}},
                [{couch_key_tree,map_leafs_simple,3},
                 {couch_key_tree,map_leafs_simple,3},
                 {couch_key_tree,map_leafs,2},
                 {couch_db_updater,'-handle_call/3-fun-2-',2},
                 {lists,mapfoldl,3},
                 {couch_db_updater,handle_call,3},
                 {gen_server,handle_msg,5},
                 {proc_lib,init_p_do_apply,3}]},
               [{gen_server,terminate,6},{proc_lib,init_p_do_apply,3}]}},
       {ancestors,[<0.171.0>]},
       {messages,[{'DOWN',#Ref<0.0.0.323>,process,<0.172.0>,normal}]},
       {links,[<0.86.0>]},
       {dictionary,[]},
       {trap_exit,false},
       {status,running},
       {heap_size,6765},
       {stack_size,24},
       {reductions,296138}],
      []]}}

[Fri, 02 Dec 2011 19:16:01 GMT] [error] [<0.32544.39>] [--------] Uncaught error in
HTTP request: {exit,
                                 {{{badarity,
                                    {#Fun<couch_db_updater.19.85972910>,
                                     [{16,
                                       <<10,23,147,107,229,215,213,57,146,60,
                                         126,44,5,163,29,166>>},
                                      {leaf,true,790623,37,4,[]}]}},
                                   [{couch_key_tree,map_leafs_simple,3},
                                    {couch_key_tree,map_leafs_simple,3},
                                    {couch_key_tree,map_leafs,2},
                                    {couch_db_updater,
                                     '-handle_call/3-fun-2-',2},
                                    {lists,mapfoldl,3},
                                    {couch_db_updater,handle_call,3},
                                    {gen_server,handle_msg,5},
                                    {proc_lib,init_p_do_apply,3}]},
                                  {gen_server,call,
                                   [<0.173.0>,
                                    {purge_docs,
                                     [{<<"kai_test1">>,
                                       [{28,
                                         <<195,226,58,8,4,228,160,131,
                                           227,78,67,48,55,223,236,249>>}]}]}]}}}

[Fri, 02 Dec 2011 19:16:01 GMT] [info] [<0.30348.2>] [--------] Shutting down group
server <<"_design/kai_test">>, db <0.173.0> closing w/ reason
{{badarity,{#Fun<couch_db_updater.19.85972910>,
            [{16,<<10,23,147,107,229,215,213,57,146,60,126,44,5,163,29,166>>},
             {leaf,true,790623,37,4,[]}]}},
 [{couch_key_tree,map_leafs_simple,3},
  {couch_key_tree,map_leafs_simple,3},
  {couch_key_tree,map_leafs,2},
  {couch_db_updater,'-handle_call/3-fun-2-',2},
  {lists,mapfoldl,3},
  {couch_db_updater,handle_call,3},
  {gen_server,handle_msg,5},
  {proc_lib,init_p_do_apply,3}]}

[Fri, 02 Dec 2011 19:16:01 GMT] [info] [<0.86.0>] [--------] db shards/80000000-9fffffff/kai_testdb.1320702717
died with reason {{badarity,
                                                                     {#Fun<couch_db_updater.19.85972910>,
                                                                      [{16,
                                                                        <<10,23,
                                                                          147,107,
                                                                          229,215,
                                                                          213,57,
                                                                          146,60,
                                                                          126,44,
                                                                          5,163,
                                                                          29,166>>},
                                                                       {leaf,
                                                                        true,
                                                                        790623,
                                                                        37,4,
                                                                        []}]}},
                                                                    [{couch_key_tree,
                                                                      map_leafs_simple,
                                                                     {couch_key_tree,
                                                                      map_leafs_simple,
                                                                      3},
                                                                     {couch_key_tree,
                                                                      map_leafs,
                                                                      2},
                                                                     {couch_db_updater,
                                                                      '-handle_call/3-fun-2-',
                                                                      2},
                                                                     {lists,
                                                                      mapfoldl,
                                                                      3},
                                                                     {couch_db_updater,
                                                                      handle_call,
                                                                      3},
                                                                     {gen_server,
                                                                      handle_msg,
                                                                      5},
                                                                     {proc_lib,
                                                                      init_p_do_apply,
                                                                      3}]}

[Fri, 02 Dec 2011 19:16:01 GMT] [info] [<0.32544.39>] [--------] Stacktrace: [{gen_server,call,2},
             {couch_httpd_db,db_req,2},
             {couch_httpd_db,do_db_req,2},
             {couch_httpd,handle_request_int,5},
             {mochiweb_http,headers,5},
             {proc_lib,init_p_do_apply,3}]
<--------------- Log entries end

Retrying the purge on the same and different nodes resulted in the same error:

> curl -d '{"kai_test1" : ["28-c3e23a0804e4a083e34e433037dfecf9" ] }' -H "Content-Type:
application/json" -X POST http://172.26.172<http://172.26.172/>.23:5986/shards%2F80000000-9fffffff%2Fkai_testdb.1320702717/_purge
{"error":"{{badarity,{#Fun<couch_db_updater.19.85972910>,\n            [{16,<<10,23,147,107,229,215,213,57,146,60,126,44,5,163,29,166>>},\n
            {leaf,true,331871,16,4,[]}]}},\n [{couch_key_tree,map_leafs_simple,3},\n  {couch_key_tree,map_leafs_simple,3},\n
 {couch_key_tree,map_leafs,2},\n  {couch_db_updater,'-handle_call/3-fun-2-',2},\n  {lists,mapfoldl,3},\n
 {couch_db_updater,handle_call,3},\n  {gen_server,handle_msg,5},\n  {proc_lib,init_p_do_apply,3}]}","reason":"{gen_server,call,\n
           [<0.27970.1>,\n             {purge_docs,[{<<\"kai_test1\">>,\n
                          [{28,\n                             <<195,226,58,8,4,228,160,131,227,78,67,48,\n
                              55,223,236,249>>}]}]}]}"}

> curl http://172.26.172.20:5986/shards%2F80000000-9fffffff%2Fkai_testdb.1320702717/_changes
{"results":[
{"seq":26,"id":"_design/kai_test","changes":[{"rev":"1-d0cfa677bd2318976b9e8b647df25cf6"}]},
{"seq":37,"id":"kai_test1","changes":[{"rev":"28-c3e23a0804e4a083e34e433037dfecf9"}],"deleted":true}
],
"last_seq":37}

> curl http://172.26.172.20:5986/shards%2F80000000-9fffffff%2Fkai_testdb.1320702717/_all_docs
{"total_rows":1,"offset":0,"rows":[
{"id":"_design/kai_test","key":"_design/kai_test","value":{"rev":"1-d0cfa677bd2318976b9e8b647df25cf6"}}
]}

> curl http://172.26.172.20:5986/shards%2F80000000-9fffffff%2Fkai_testdb.1320702717/_changes
{"results":[
{"seq":26,"id":"_design/kai_test","changes":[{"rev":"1-d0cfa677bd2318976b9e8b647df25cf6"}]},
{"seq":37,"id":"kai_test1","changes":[{"rev":"28-c3e23a0804e4a083e34e433037dfecf9"}],"deleted":true}
],
"last_seq":37}

> curl -d '{"kai_test1" : ["28-c3e23a0804e4a083e34e433037dfecf9" ] }' -H "Content-Type:
application/json" -X POST http://172.26.172<http://172.26.172/>.20:5986/shards%2F80000000-9fffffff%2Fkai_testdb.1320702717/_purge
{"error":"{{badarity,{#Fun<couch_db_updater.19.85972910>,\n            [{16,<<10,23,147,107,229,215,213,57,146,60,126,44,5,163,29,166>>},\n
            {leaf,true,790623,37,4,[]}]}},\n [{couch_key_tree,map_leafs_simple,3},\n  {couch_key_tree,map_leafs_simple,3},\n
 {couch_key_tree,map_leafs,2},\n  {couch_db_updater,'-handle_call/3-fun-2-',2},\n  {lists,mapfoldl,3},\n
 {couch_db_updater,handle_call,3},\n  {gen_server,handle_msg,5},\n  {proc_lib,init_p_do_apply,3}]}","reason":"{gen_server,call,\n
           [<0.32635.39>,\n             {purge_docs,[{<<\"kai_test1\">>,\n
                          [{28,\n                             <<195,226,58,8,4,228,160,131,227,78,67,48,\n
                              55,223,236,249>>}]}]}]}"}

Any idea why this is still happening?

Thanks,

Kai

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