[SVN-3393] Merge consuming too much memory

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: trunk
• Fix Version/s: 1.6.2
• Component/s: libsvn_client
• Assignee: Unassigned
• Reporter: Paul Burba
• Created: 08/Apr/09 18:59
• Updated: 27/Oct/18 16:35
• Resolved: 08/Apr/09 19:30

Description

When a merge target has thousands of subtrees with explicit mergeinfo memory
usage increases into the multi-GB range:

http://subversion.open.collab.net/ds/viewMessage.do?dsForumId=4&dsMessageId=310649
http://svn.haxx.se/users/archive-2008-10/0557.shtml
http://svn.haxx.se/dev/archive-2009-04/0290.shtml

The merge code does hold an array of svn_client__merge_path_t in memory
describing all the subtree paths with mergeinfo, so we expect memory usage to be
proportional to the number of subtrees, but 4GB!  Something is wrong...