[COUCHDB-536] CouchDB HTTP server stops accepting connections

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 0.10, 1.1
• Component/s: HTTP Interface

Environment

Ubuntu Linux 8.04 32bit and 64bit with Erlang R13B01
or Ubuntu Linux 8.04 64bit with Erlang R14B02

• Skill Level: Committers Level (Medium to Hard)
• Assignee: Unassigned
• Reporter: Simon Eisenmann
• Created: 19/Oct/09 08:30
• Updated: 02/Sep/18 06:29
• Resolved: 02/Sep/18 06:29

Description

Having 3 Couches all replicating a couple of databases to each other (pull replication with a update notification process) the HTTP service on any of the Couches stops working at some point (when running for a couple of ours with constant changes on all databases and servers).

This is the error when a new HTTP request comes in:

=ERROR REPORT==== 19-Oct-2009::10:18:55 ===
application: mochiweb
"Accept failed error"
"

{error,enfile}

"
[error] [<0.21619.12>] {error_report,<0.24.0>,
{<0.21619.12>,crash_report,
[[{initial_call,{mochiweb_socket_server,acceptor_loop,['Argument__1']}},

{pid,<0.21619.12>}

,

{registered_name,[]}

,
{error_info,
{exit,

{error,accept_failed},
[{mochiweb_socket_server,acceptor_loop,1},
{proc_lib,init_p_do_apply,3}]}},
{ancestors, [couch_httpd,couch_secondary_services,couch_server_sup,<0.1.0>]},
{messages,[]},
{links,[<0.66.0>]},
{dictionary,[]},
{trap_exit,false},
{status,running},
{heap_size,233},
{stack_size,24},
{reductions,202}],
[]]}}
[error] [<0.66.0>] {error_report,<0.24.0>,
{<0.66.0>,std_error,
{mochiweb_socket_server,225,{acceptor_error,{error,accept_failed}

}}}}

To me this seems like it runs out of threads or sockets to handle the new connection or somewhat like this.

Also i see in this setup that if i put lots of changes in a short time at some point the replication process hangs (never finishes) and when trying to restart the same replication once again is not possible and resulting in a timeout.