Sync Gateway testing causing bucket flush failures

Error flushing bucket: {"_":"Flush failed with unexpected error. Check server logs for details."}  Will retry. -- base.(*Collection).Flush.func1() at collection.go:631

=========================CRASH REPORT=========================

  crasher:

    initial call: misc:turn_into_gen_server/4

    pid: <15922.25127.141>

    registered_name: 'capi_set_view_manager-sg_int_1_1651663419116586663'

    exception throw: {file_already_opened,

                         "/opt/couchbase/var/lib/couchbase/data/@indexes/sg_int_1_1651663419116586663/main_72cc6e6eba2986295f83acae24e19759.view.1"}

      in function  couch_set_view:get_group_server/2 (/home/couchbase/jenkins/workspace/couchbase-server-unix/couchdb/src/couch_set_view/src/couch_set_view.erl, line 437)

      in call from couch_set_view:define_group/4 (/home/couchbase/jenkins/workspace/couchbase-server-unix/couchdb/src/couch_set_view/src/couch_set_view.erl, line 143)

      in call from timer:tc/3 (timer.erl, line 197)

      in call from capi_set_view_manager:maybe_define_group/2 (src/capi_set_view_manager.erl, line 292)

      in call from capi_set_view_manager:'-init/1-lc$^1/1-0-'/2 (src/capi_set_view_manager.erl, line 175)

      in call from capi_set_view_manager:init/1 (src/capi_set_view_manager.erl, line 176)

      in call from misc:turn_into_gen_server/4 (src/misc.erl, line 503)

    ancestors: [<0.11095.28>,

                  'single_bucket_kv_sup-sg_int_1_1651663419116586663',

                  ns_bucket_sup,ns_bucket_worker_sup,ns_server_sup,

                  ns_server_nodes_sup,<0.270.0>,ns_server_cluster_sup,

                  root_sup,<0.145.0>]

    message_queue_len: 0

    messages: []

    links: [<0.11095.28>,<15922.25143.141>]

    dictionary: []

    trap_exit: false

    status: running

    heap_size: 4185

    stack_size: 29

    reductions: 28307

  neighbours:

[ns_server:error,2022-05-04T11:28:22.050Z,ns_1@127.0.0.1:<0.8103.8>:menelaus_util:reply_server_error_before_close:210]Server error during processing: ["web request failed",

                                 {path,

                                  "/pools/default/buckets/sg_int_2_1651663419116586663/controller/doFlush"},

                                 {method,'POST'},

                                 {type,exit},

                                 {what,

                                  {{{badmatch,

                                     {error,

                                      {failed_nodes,['ns_1@127.0.0.1']}}},

                                    [{ns_janitor,cleanup_apply_config_body,4,

                                      [{file,"src/ns_janitor.erl"},

                                       {line,295}]},

                                     {ns_janitor,

                                      '-cleanup_apply_config/4-fun-0-',4,

                                      [{file,"src/ns_janitor.erl"},

                                       {line,215}]},

                                     {async,'-async_init/4-fun-1-',3,

                                      [{file,"src/async.erl"},{line,191}]}]},

                                   {gen_statem,call,

                                    [{via,leader_registry,ns_orchestrator},

                                     {flush_bucket,

                                      "sg_int_2_1651663419116586663"},

                                     infinity]}}},

                                 {trace,

                                  [{gen,do_call,4,

                                    [{file,"gen.erl"},{line,220}]},

                                   {gen,do_for_proc,2,

                                    [{file,"gen.erl"},{line,381}]},

                                   {gen_statem,call_dirty,4,

                                    [{file,"gen_statem.erl"},{line,684}]},

                                   {menelaus_web_buckets,

                                    do_handle_bucket_flush,2,

                                    [{file,"src/menelaus_web_buckets.erl"},

                                     {line,703}]},

                                   {request_tracker,request,2,

                                    [{file,"src/request_tracker.erl"},

                                     {line,40}]},

                                   {menelaus_util,handle_request,2,

                                    [{file,"src/menelaus_util.erl"},

                                     {line,221}]},

                                   {mochiweb_http,headers,6,

                                    [{file,

                                      "/home/couchbase/jenkins/workspace/couchbase-server-unix/couchdb/src/mochiweb/mochiweb_http.erl"},

                                     {line,153}]},

                                   {proc_lib,init_p_do_apply,3,

                                    [{file,"proc_lib.erl"},{line,226}]}]}]

[ns_server:error,2022-05-04T11:28:22.274Z,ns_1@127.0.0.1:ns_doctor<0.882.0>:ns_doctor:update_status:303]The following buckets became not ready on node 'ns_1@127.0.0.1': ["sg_int_0_1651663419116586663",

                                                                  "sg_int_2_1651663419116586663"], those of them are active ["sg_int_0_1651663419116586663",

                                                                                                                             "sg_int_2_1651663419116586663"]