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From "Randall Leeds (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COUCHDB-722) Continuous replication tasks fail
Date Thu, 01 Apr 2010 19:11:31 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12852510#action_12852510
] 

Randall Leeds commented on COUCHDB-722:
---------------------------------------

I'm rather confused.

The compaction seems to be on the service-metrics database, but the replication is between
databases named node-metrics.
However, there's a POST to /service-metrics/_missing_revs on the target database right around
the time compaction completes. Replication performs this operation. Are you using vhosts or
some kind of proxy layer that's rewriting any of your requests? Could you include a little
bit more context at the end where you put the ...? In particular I want to know if the replication
was using the service-metrics database at all.

> Continuous replication tasks fail
> ---------------------------------
>
>                 Key: COUCHDB-722
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-722
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Replication
>    Affects Versions: 0.11
>         Environment: Arch Linux, CouchDB 0.11
>            Reporter: Fredrik Widlund
>
> Couchdb 0.11.0 replication tasks fails with the below after working for everything from
a few minutes to an hour. The below replication is of the type {"source":"http://127.0.0.1:5984/node-metrics",
"target":"http://1.2.3.4:5984/node-metrics", "continuous":true} and the node-metrics database
exist on both machines.
> The database is periodically compacted which, and I'm speculating here, could be a contributing
factor to the crash.
> Kind regards,
> Fredrik Widlund
> =CRASH REPORT==== 1-Apr-2010::14:25:26 ===
>   crasher:
>     initial call: couch_rep:init/1
>     pid: <0.274.0>
>     registered_name: []
>     exception exit: {{badmatch,
>                          {stop,
>                              {db_not_found,
>                                  <<"http://127.0.0.1:5984/node-metrics/">>}}},
>                      [{couch_rep,do_checkpoint,1},
>                       {couch_rep,handle_cast,2},
>                       {gen_server,handle_msg,5},
>                       {proc_lib,init_p_do_apply,3}]}
>       in function  gen_server:terminate/6
>     ancestors: [couch_rep_sup,couch_primary_services,couch_server_sup,
>                   <0.32.0>]
>     messages: [{'EXIT',<0.21084.1>,normal}]
>     links: [<0.81.0>]
>     dictionary: [{task_status_update,{{1270,124726,124009},0}}]
>     trap_exit: true
>     status: running
>     heap_size: 10946
>     stack_size: 24
>     reductions: 29173458
>   neighbours:
> [error] [<0.81.0>] {error_report,<0.31.0>,
>     {<0.81.0>,supervisor_report,
>      [{supervisor,{local,couch_rep_sup}},
>       {errorContext,child_terminated},
>       {reason,
>           {{badmatch,
>                {stop,
>                    {db_not_found,<<"http://127.0.0.1:5984/node-metrics/">>}}},
>            [{couch_rep,do_checkpoint,1},
>             {couch_rep,handle_cast,2},
>             {gen_server,handle_msg,5},
>             {proc_lib,init_p_do_apply,3}]}},
>       {offender,
>           [{pid,<0.274.0>},
>            {name,"f3e3081db5a215dbaf9b2984f0552090+continuous"},
>            {mfa,
>                {gen_server,start_link,
>                    [couch_rep,
>                     ["f3e3081db5a215dbaf9b2984f0552090",
>                      {[{<<"target">>,
>                         <<"http://1.2.3.4:5984/node-metrics">>},
>                        {<<"source">>,<<"http://127.0.0.1:5984/node-metrics">>},
>                        {<<"continuous">>,true}]},
>                      {user_ctx,null,
>                          [<<"_admin">>],
>                          <<"{couch_httpd_auth, default_authentication_handler}">>}],
>                     []]}},
>            {restart_type,temporary},
>            {shutdown,1},
>            {child_type,worker}]}]}}
> =SUPERVISOR REPORT==== 1-Apr-2010::14:25:26 ===
>      Supervisor: {local,couch_rep_sup}
>      Context:    child_terminated
>      Reason:     {{badmatch,
>                       {stop,
>                           {db_not_found,
>                               <<"http://127.0.0.1:5984/node-metrics/">>}}},
>                   [{couch_rep,do_checkpoint,1},
>                    {couch_rep,handle_cast,2},
>                    {gen_server,handle_msg,5},
>                    {proc_lib,init_p_do_apply,3}]}
>      Offender:   [{pid,<0.274.0>},
>                   {name,"f3e3081db5a215dbaf9b2984f0552090+continuous"},
>                   {mfa,
>                       {gen_server,start_link,
>                           [couch_rep,
>                            ["f3e3081db5a215dbaf9b2984f0552090",
>                             {[{<<"target">>,
>                                <<"http://1.2.3.4:5984/node-metrics">>},
>                               {<<"source">>,
>                                <<"http://127.0.0.1:5984/node-metrics">>},
>                               {<<"continuous">>,true}]},
>                             {user_ctx,null,
>                                 [<<"_admin">>],
>                                 <<"{couch_httpd_auth, default_authentication_handler}">>}],
>                            []]}},
>                   {restart_type,temporary},
>                   {shutdown,1},
>                   {child_type,worker}]

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