memcached unable to connect to mccouch anymore after calling flush_all on a bucket with 1M items when indexing was going on

ran a very basic test - load 1M items , create a view , run some queries and then enable flush_all , call flush_all on one node

then saw that views dont seem to work after this and got many errors related to memcached connection to mccouch as well

[error_logger:error] [2012-08-02 20:06:19] [n_0@127.0.0.1:error_logger:ale_error_logger_handler:log_report:72]
=========================CRASH REPORT=========================
  crasher:
    initial call: mc_connection:init/1
    pid: <0.4243.3>
    registered_name: []
    exception exit: unsupported
      in function mc_connection:just_process_message/7 (src/mc_connection.erl, line 140)
      in call from mc_connection:handle_message/9 (src/mc_connection.erl, line 143)
      in call from mc_connection:read_full_message/2 (src/mc_connection.erl, line 154)
      in call from mc_connection:run_loop/2 (src/mc_connection.erl, line 186)
    ancestors: [mc_conn_sup,mc_sup,ns_server_sup,ns_server_cluster_sup,
                  <0.59.0>]
    messages: []
    links: [<0.10565.0>,#Port<0.185762>]
    dictionary: []
    trap_exit: false
    status: running
    heap_size: 610
    stack_size: 24
    reductions: 752
  neighbours:

[error_logger:error] [2012-08-02 20:06:19] [n_0@127.0.0.1:error_logger:ale_error_logger_handler:log_report:72]
=========================SUPERVISOR REPORT=========================
     Supervisor: {local,mc_conn_sup}
     Context: child_terminated
     Reason: unsupported
     Offender: [{pid,<0.4243.3>},
                  {name,mc_connection},
                  {mfargs,{mc_connection,start_link,undefined}},
                  {restart_type,temporary},
                  {shutdown,brutal_kill},
                  {child_type,worker}]


[error_logger:error] [2012-08-02 20:06:19] [n_0@127.0.0.1:error_logger:ale_error_logger_handler:log_report:72]
=========================CRASH REPORT=========================
  crasher:
    initial call: mc_connection:init/1
    pid: <0.4244.3>
    registered_name: []
    exception exit: unsupported
      in function mc_connection:just_process_message/7 (src/mc_connection.erl, line 140)
      in call from mc_connection:handle_message/9 (src/mc_connection.erl, line 143)
      in call from mc_connection:read_full_message/2 (src/mc_connection.erl, line 154)
      in call from mc_connection:run_loop/2 (src/mc_connection.erl, line 186)
    ancestors: [mc_conn_sup,mc_sup,ns_server_sup,ns_server_cluster_sup,
                  <0.59.0>]
    messages: []
    links: [<0.10565.0>,#Port<0.185763>]
    dictionary: []
    trap_exit: false
    status: running
    heap_size: 610
    stack_size: 24
    reductions: 752
  neighbours:

[error_logger:error] [2012-08-02 20:06:19] [n_0@127.0.0.1:error_logger:ale_error_logger_handler:log_report:72]
=========================SUPERVISOR REPORT=========================
     Supervisor: {local,mc_conn_sup}
     Context: child_terminated
     Reason: unsupported
     Offender: [{pid,<0.4244.3>},
                  {name,mc_connection},
                  {mfargs,{mc_connection,start_link,undefined}},
                  {restart_type,temporary},
                  {shutdown,brutal_kill},
                  {child_type,worker}]


[ns_server:info] [2012-08-02 20:06:19] [n_0@127.0.0.1:ns_port_memcached:ns_port_server:log:169] memcached<0.10572.0>: Connected to mccouch: "localhost:13000"
memcached<0.10572.0>: Connection closed by mccouch
memcached<0.10572.0>: Trying to connect to mccouch: "localhost:13000"
memcached<0.10572.0>: Connected to mccouch: "localhost:13000"
memcached<0.10572.0>: Connection closed by mccouch
memcached<0.10572.0>: Trying to connect to mccouch: "localhost:13000"
memcached<0.10572.0>: Connected to mccouch: "localhost:13000"
memcached<0.10572.0>: Connection closed by mccouch
memcached<0.10572.0>: Trying to connect to mccouch: "localhost:13000"
memcached<0.10572.0>: Connected to mccouch: "localhost:13000"
memcached<0.10572.0>: Connection closed by mccouch
memcached<0.10572.0>: Trying to connect to mccouch: "localhost:13000"
memcached<0.10572.0>: Connected to mccouch: "localhost:13000"
memcached<0.10572.0>: Connection closed by mccouch
memcached<0.10572.0>: Trying to connect to mccouch: "localhost:13000"
memcached<0.10572.0>: Connected to mccouch: "localhost:13000"
memcached<0.10572.0>: Connection closed by mccouch
memcached<0.10572.0>: Trying to connect to mccouch: "localhost:13000"
memcached<0.10572.0>: Connected to mccouch: "localhost:13000"
memcached<0.10572.0>: Connection closed by mccouch
memcached<0.10572.0>: Trying to connect to mccouch: "localhost:13000"
memcached<0.10572.0>: Connected to mccouch: "localhost:13000"


the first set of diags are related to that

then i did restart memcached on that node and things looked better after that.

this test was run only on a single node. I think things will look worse on a cluster.