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From stef...@apache.org
Subject svn commit: r1411202 - /subversion/trunk/subversion/libsvn_fs_fs/structure
Date Mon, 19 Nov 2012 14:31:37 GMT
Author: stefan2
Date: Mon Nov 19 14:31:37 2012
New Revision: 1411202

URL: http://svn.apache.org/viewvc?rev=1411202&view=rev
Log:
* subversion/libsvn_fs_fs/structure
  (Transaction layout): document sha1->rep mapping files

Found by: julianf

Modified:
    subversion/trunk/subversion/libsvn_fs_fs/structure

Modified: subversion/trunk/subversion/libsvn_fs_fs/structure
URL: http://svn.apache.org/viewvc/subversion/trunk/subversion/libsvn_fs_fs/structure?rev=1411202&r1=1411201&r2=1411202&view=diff
==============================================================================
--- subversion/trunk/subversion/libsvn_fs_fs/structure (original)
+++ subversion/trunk/subversion/libsvn_fs_fs/structure Mon Nov 19 14:31:37 2012
@@ -526,6 +526,7 @@ A transaction directory has the followin
   node.<nid>.<cid>           New node-rev data for node
   node.<nid>.<cid>.props     Props for new node-rev, if changed
   node.<nid>.<cid>.children  Directory contents for node-rev
+  <sha1>                     Text representation of that sha1
 
 In FS formats 1 and 2, it also contains:
 
@@ -543,6 +544,11 @@ The two kinds of props files are all in 
 file will always be present.  The "node.<nid>.<cid>.props" file will
 only be present if the node-rev properties have been changed.
 
+The <sha1> files have been introduced in FS format 6. Their content
+is that of text rep references: "<rev> <offset> <length> <size> <digest>"
+They will be written for text reps in the current transaction and be
+used to eliminate duplicate reps within that transaction.
+
 The "next-ids" file contains a single line "<next-temp-node-id>
 <next-temp-copy-id>\n" giving the next temporary node-ID and copy-ID
 assignments (without the leading underscores).  The next node-ID is



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