http://www.couchbase.com/issues This file is an XML representation of an issue en-us 5.2.4 845 26-12-2012 http://www.couchbase.com/issues/browse/MB-4195 Couchbase Server Chiyoung found one case of memory leak with append/prepend in the 1.7.x ep-engine code. The scenario is... <br/> <br/> If the client app is using CAS with their append/prepend operations, and they have concurrent clients trying to append to the same hot item, then several of the concurrent clients could be &quot;rejected&quot; in that their CAS values are out of date. The rejected CAS-mismatch clients would see a EEXISTS error code if they&#39;re binary protocol clients. These requests that have rejected CAS-mismatch will leak the item. <br/> <br/> This should also be reproducible with a single client, where any append operations use a bogus CAS number. <br/> MB-4195

append/prepend leaks item memory on CAS mismatch

Bug Critical Closed Fixed Public Chiyoung Seo Steve Yen Mon, 15 Aug 2011 14:42:40 -0500 Tue, 10 Apr 2012 21:03:17 -0500 Tue, 16 Aug 2011 17:18:51 -0500 1.7.1 couchbase-bucket 0 0 Integrated in github-ep-engine-1-7-1 #142 (See [<a href="http://qa.hq.northscale.net/job/github-ep-engine-1-7-1/142/">http://qa.hq.northscale.net/job/github-ep-engine-1-7-1/142/</a>])<br/> &nbsp;&nbsp;&nbsp;&nbsp;<a href="http://www.couchbase.com/issues/browse/MB-4195" title="append/prepend leaks item memory on CAS mismatch"><strike>MB-4195</strike></a> Free an item if prepend/append failed due to CAS mismatches<br/> <br/> Chiyoung Seo : <br/> Files : <br/> * ep_engine.cc<br/> <a href="http://review.couchbase.org/#change,8965">http://review.couchbase.org/#change,8965</a> Date of First Response Mon, 15 Aug 2011 17:36:19 -0500 Rank 6214 Time In Status