Do you issue two compact commands simultaneously or wait for the first one to complete and then run the second?
On Mon, Sep 20, 2010 at 4:07 PM, [mRg] <emar...@gmail.com> wrote: > Well I can certainly reproduce the issue, but am having trouble finding the > exact sequence (annoyingly of course) > > 1> I started with a blank VM of Ubuntu 10.10 (ext3) running on virtualbox > with latest CouchDB (apt-get install couchdb) > 2> Began adding lots of blank docs .. (curl -X POST -H > "Content-Type:application/json" http://localhost:5984/test -d {}) > 3> Created a simple view ("function(doc) { emit(null, doc); }") and ran to > ensure it wrote to disk. > 4> I issued 2 compact commands (curl -X POST > http://localhost:5984/test/_compact/ -H "Content-Type:application/json") > 5> And began adding more documents again as before .. > > Repeating this, essentially creating view data and compacting it about 10 > times resulted in 4 'snagged' files > > r...@ubuntu:~# lsof | grep -P 'COMMAND|/var/lib/couchdb/1.0.1' > COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME > beam 1083 couchdb 13u REG 252,0 4185 271 > /var/lib/couchdb/1.0.1/_users.couch >>> beam 1083 couchdb 14u REG 252,0 331865 275 > /var/lib/couchdb/1.0.1/.delete/4e000e0ae5cce3d275f09b4542396e85 (deleted) >>> beam 1083 couchdb 16u REG 252,0 602210 279 > /var/lib/couchdb/1.0.1/.delete/a9ee2b96c12591455ea795fa5324dc9c (deleted) > beam 1083 couchdb 17u REG 252,0 270434 283 > /var/lib/couchdb/1.0.1/.test_design/07ca32cf9b0de9c915c5d9ce653cdca3.view > beam 1083 couchdb 18u REG 252,0 204898 284 > /var/lib/couchdb/1.0.1/.test_design/540958c4124af3925fe467afb96f4906.view > beam 1083 couchdb 20u REG 252,0 405602 286 > /var/lib/couchdb/1.0.1/.test_design/f26a8fcc3d2ce226a9e652338882c3db.view > beam 1083 couchdb 21u REG 252,0 299106 287 > /var/lib/couchdb/1.0.1/.test_design/40614f8c8e1b4bab9d093881e914729d.view >>> beam 1083 couchdb 22u REG 252,0 106594 285 > /var/lib/couchdb/1.0.1/.delete/31909e936ce94db7a6cede72827b18b2 (deleted) >>> beam 1083 couchdb 24r REG 252,0 233570 288 > /var/lib/couchdb/1.0.1/.delete/83d09ec6dab90ca6078c0310085b97cc (deleted) > beam 1083 couchdb 26u REG 252,0 163932 281 > /var/lib/couchdb/1.0.1/.test_design/3486e8de398e27b8767afd4975691360.view > beam 1083 couchdb 27w REG 252,0 114786 289 > /var/lib/couchdb/1.0.1/test.couch > beam 1083 couchdb 28u REG 252,0 217186 280 > /var/lib/couchdb/1.0.1/.test_design/b450740e3245f89ab902db10d767a397.view > > .. while the bottom 2 marked with (deleted) hung around for about 20 minutes > they eventually disappeared .. > > r...@ubuntu:~# lsof | grep -P 'COMMAND|/var/lib/couchdb/1.0.1' > COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME > beam 1083 couchdb 13u REG 252,0 4185 271 > /var/lib/couchdb/1.0.1/_users.couch >>> beam 1083 couchdb 14u REG 252,0 331865 275 > /var/lib/couchdb/1.0.1/.delete/4e000e0ae5cce3d275f09b4542396e85 (deleted) >>> beam 1083 couchdb 16u REG 252,0 602210 279 > /var/lib/couchdb/1.0.1/.delete/a9ee2b96c12591455ea795fa5324dc9c (deleted) > beam 1083 couchdb 17u REG 252,0 270434 283 > /var/lib/couchdb/1.0.1/.test_design/07ca32cf9b0de9c915c5d9ce653cdca3.view > beam 1083 couchdb 18u REG 252,0 204898 284 > /var/lib/couchdb/1.0.1/.test_design/540958c4124af3925fe467afb96f4906.view > beam 1083 couchdb 20u REG 252,0 405602 286 > /var/lib/couchdb/1.0.1/.test_design/f26a8fcc3d2ce226a9e652338882c3db.view > beam 1083 couchdb 21u REG 252,0 299106 287 > /var/lib/couchdb/1.0.1/.test_design/40614f8c8e1b4bab9d093881e914729d.view > beam 1083 couchdb 23u REG 252,0 114786 288 > /var/lib/couchdb/1.0.1/test.couch > beam 1083 couchdb 26u REG 252,0 163932 281 > /var/lib/couchdb/1.0.1/.test_design/3486e8de398e27b8767afd4975691360.view > beam 1083 couchdb 28u REG 252,0 217186 280 > /var/lib/couchdb/1.0.1/.test_design/b450740e3245f89ab902db10d767a397.view > > .. but the top 2 did not and are still hanging around over an hour later .. > > I will keep looking to see if I can find the exact sequence .. > > On 20 September 2010 19:09, [mRg] <emar...@gmail.com> wrote: > >> I am trying to reproduce it currently on a fresh VM. It seems to be a >> symptom of view compaction, after the file is moved to the .delete directory >> and then finally deleted is where the problem seems to occur. >> >> I tried with a fresh ubuntu 10.10 but I couldnt reproduce but the system >> I'm seeing it on is ext3 (ubuntu was ext4) so I'm going to start again with >> that and report back. >> >> I did wonder how this would be reproduced in a test as you have to get >> quite low level (using lsof) to see if the issue is manifesting itself :) >> >> Regards >> >> Stephen >> >> On 20 September 2010 16:00, Chris Anderson <jch...@apache.org> wrote: >> >>> On Sun, Sep 19, 2010 at 3:21 PM, Randall Leeds <randall.le...@gmail.com> >>> wrote: >>> > If the bug is confirmed it should be on JIRA if it is not already. If >>> > you have a test case that reproduces it that would be fanstastic >>> > (bonus points for a JS test in Futon). >>> > >>> > It's my opinion something this serious should block 1.1, but >>> > ultimately that is up to the committers to determine, yes? >>> > >>> >>> I think this is pretty serious. It's probably a simple fix, so as soon >>> as we have it reproducible, I'm sure it will get fixed. >>> >>> I'm not sure how it can be tested from JavaScript, any ideas? >>> >>> If not it should be testable via the Erlang tests. >>> >>> Chris >>> >>> > On Sun, Sep 19, 2010 at 22:09, [mRg] <emar...@gmail.com> wrote: >>> >> Hi all, >>> >> >>> >> This is just a cross-post to highlight a thread on the user list. (with >>> the >>> >> same name as this one - all details etc are on there, happy to repeat >>> here >>> >> if needed). It seems this problem was discussed by some devs at >>> CouchCamp >>> >> and seems others are suffering this issue. I was just wondering if >>> there was >>> >> a JIRA issue related to this that I/we can track and if a fix for this >>> will >>> >> be included in any upcoming released (1.1 ?). >>> >> >>> >> Regards >>> >> >>> >> Stephen >>> >> >>> > >>> >>> >>> >>> -- >>> Chris Anderson >>> http://jchrisa.net >>> http://couch.io >>> >> >> >
