[#MB-4626] couch_set_view,handle_info,\n [{'DOWN' error when user changes the design_doc during rebalance and runs the view query

[MB-4626] couch_set_view,handle_info,\n [{'DOWN' error when user changes the design_doc during rebalance and runs the view query Created: 11/Jan/12 Updated: 09/Jan/13 Resolved: 24/Jan/12
Status:	Closed
Project:	Couchbase Server
Component/s:	ns_server, view-engine
Affects Version/s:	2.0-developer-preview-3
Fix Version/s:	2.0-developer-preview-4
Security Level:	Public

Type:

Bug

Priority:

Blocker

Reporter:

Farshid Ghods

Assignee:

Tommie McAfee

Resolution:

Fixed

Votes:

Labels:

2.0-dev-preview-4-release-notes

Remaining Estimate:

Not Specified

Time Spent:

Not Specified

Original Estimate:

Not Specified

Attachments:

log-1-15.zip

Description

steps to reproduce

start cluster_run -n4

run mcsodea
python pytests/performance/mcsoda.py memcached-binary://127.0.0.1:12001 json=1 doc-gen=0 doc-cache=0 max-items=10000

when the load is running rebalance in a new node and then modify the view during rebalance

log is also attached

Comments

Comment by Farshid Ghods [ 11/Jan/12 ]

"error":"{{nocatch,shutdown},\n [{couch_set_view,get_group,3},\n {couch_set_view,get_map_view,5},\n {couch_view_merger,prepare_set_view,4},\n {couch_view_merger,map_set_view_folder,5}]}","reason":"{gen_server,call,[<0.19415.5>,pop,infinity]}"}

[error_logger:error] [2012-01-11 13:15:26] [n_3@10.17.11.108:error_logger:ale_error_logger_handler:log_report:72]
=========================SUPERVISOR REPORT=========================
     Supervisor: {local,couch_secondary_services}
     Context: child_terminated
     Reason: {function_clause,
                     [{couch_set_view,handle_info,
                          [{'DOWN',#Ref<0.0.195.244933>,process,<0.492.6>,
                               {badmatch,
                                   {error,
                                       {{badmatch,{not_found,no_db_file}},
                                        [{couch_db_set,'-init/1-fun-0-',4},
                                         {lists,foldl,3},
                                         {couch_db_set,init,1},
                                         {gen_server,init_it,6},
                                         {proc_lib,init_p_do_apply,3}]}}}},
                           {server,
                               "/space/repo/couchbase-2.0/ns_server/couch/3",

Comment by Filipe Manana [ 11/Jan/12 ]

That seems to be caused by another error that precedes it.
This other error was corrected in the following commit:

https://github.com/couchbase/couchdb/commit/75a904c093e89d12bec86f3f46b390a30e6ba27f

(merged today some hours ago)

Comment by Steve Yen [ 24/Jan/12 ]

Marking this Resolved on behalf of Filipe, based on his last comment.

Filipe, if that's incorrect, please do reopen. Thanks!

Comment by Filipe Manana [ 24/Jan/12 ]

Steve, correct.
I just improved the error handling for these cases, to ensure the caller (ns_server) always gets a reply (instead of hanging) and a more helpful error/message like for e.g.:

{db_open_error,
    <<"default/0">>,
    {not_found,no_db_file},
    <<"Couldn't open database `default/0`, reason: {not_found,no_db_file}">>},

The gerrit change: http://review.couchbase.org/#change,12600

Generated at Tue Jun 18 15:46:03 CDT 2013 using JIRA 5.2.4#845-sha1:c9f4cc41abe72fb236945343a1f485c2c844dac9.

[MB-4626] couch_set_view,handle_info,\n [{'DOWN' error when user changes the design_doc during rebalance and runs the view query Created: 11/Jan/12 Updated: 09/Jan/13 Resolved: 24/Jan/12