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From "Filipe Manana (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COUCHDB-1283) Impossible to compact view groups when number of active databases > max_dbs_open
Date Fri, 16 Sep 2011 18:50:15 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-1283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13106692#comment-13106692
] 

Filipe Manana commented on COUCHDB-1283:
----------------------------------------

I forgot to paste it yesterday, here's the error I get when a view recompact happens with
trunk:

$ ./test/etap/run -v test/etap/201-view-group-shutdown.t 
test/etap/201-view-group-shutdown.t .. 
# Current time local 2011-09-16 00:10:22
# Using etap version "0.3.4"
1..17
Apache CouchDB 0.0.0 (LogLevel=info) is starting.
Apache CouchDB has started. Time to relax.
[info] [<0.2.0>] Apache CouchDB has started on http://127.0.0.1:58243/
# View group updated
ok 1  - Spawned writer 1
ok 2  - Spawned writer 2
ok 3  - Writer 1 opened his database
ok 4  - Writer 2 opened his database
# View group updated
ok 5  - Spawned writer 3
ok 6  - Writer 3 got {error, all_dbs_active} when opening his database
ok 7  - Writer 1 still alive
ok 8  - Writer 2 still alive
ok 9  - Writer 3 still alive
[info] [<0.179.0>] Recompacting index couch_test_view_group_shutdown _design/foo at
20001
[error] [emulator] Error in process <0.190.0> with exit value: {undef,[{couch_index_updater,update,[couch_mrview_index,{mrst,<<16
bytes>>,<0.181.0>,<<30 bytes>>,<<11 bytes>>,<<10
bytes>>,[],{[]},[{mrview,0,0,0,[<<4 bytes>>,<<4 bytes>>,<<4
bytes>>,<<4 bytes>>,<<3 bytes>>],[],<<37 bytes>>,{btree,<0.181.0>,{29679751,{20000,[]},29237352},#Fun<couch_btree.3.126133433>,#Fun<couch_btree.4.37628535>,#Fun<couch_ejson_compare.less_json_ids.2>,#Fun<couch_mrview_util.8.13864802>,snappy},[]}],{btree,<0.181.0>,{384486,20000,384638},#Fun<couch_btree.3.126133433>,#Fun<couch_btree.4.37628535>,#Fun<couch_btree.5.9554535>,#Fun<couch_mrview_util.6.41372338>,snappy},20001,0,undefined,undefined,undefined,undefined,undefined,nil}]}]}

=ERROR REPORT==== 16-Sep-2011::00:10:38 ===
Error in process <0.190.0> with exit value: {undef,[{couch_index_updater,update,[couch_mrview_index,{mrst,<<16
bytes>>,<0.181.0>,<<30 bytes>>,<<11 bytes>>,<<10
bytes>>,[],{[]},[{mrview,0,0,0,[<<4 bytes>>,<<4 bytes>>,<<4
bytes>>,<<4 bytes>>,<<3 bytes>>],[],<<37 bytes>>,{btree,<0.181.0>,{29679751,{20000,[]},29237352},#Fun<couch_btree.3.126133433>,#Fun<couch_btree.4.37628535>,#Fun<couch_ejson_compare.less_json_ids.2>,#Fun<couch_mrview_util.8.13864802>,snappy},[]}],{btree,<0.181.0>,{384486,20000,384638},#Fun<couch_btree.3.126133433>,#Fun<couch_btree.4.37628535>,#Fun<couch_btree.5.9554535>,#Fun<couch_mrview_util.6.41372338>,snappy},20001,0,undefined,undefined,undefined,undefined,undefined,nil}]}]}


couch_index_updater:update/2 doesn't exist, but there's a 3-arity version of it, however I'm
not sure where to get the 3rd argument for it.

> Impossible to compact view groups when number of active databases > max_dbs_open
> --------------------------------------------------------------------------------
>
>                 Key: COUCHDB-1283
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1283
>             Project: CouchDB
>          Issue Type: Bug
>            Reporter: Filipe Manana
>            Assignee: Paul Joseph Davis
>             Fix For: 1.1.1, 1.2
>
>         Attachments: couchdb-1283_12x.patch, couchdb-1283_trunk.patch
>
>
> Mike Leddy recently reported this issue in the users mailing list:
> http://mail-archives.apache.org/mod_mbox/couchdb-user/201109.mbox/%3C1315949945.22123.22.camel@mike.loop.com.br%3E
> The attached patch is the simplest solution I can think of - keeping the database open
until the view compaction finishes.
> The patch includes a test case.
> It will need to be updated after Paul's view index refactoring (COUCHDB-1270).

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