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Subject svn commit: r1744791 - /subversion/site/publish/docs/release-notes/1.9.html
Date Fri, 20 May 2016 19:53:16 GMT
Author: luke1410
Date: Fri May 20 19:53:16 2016
New Revision: 1744791

Add a troubleshooting section to 1.9 to help users tracing down problems
related to proxies when locking/unlocking multiple files.

* docs/release-notes/1.9.html
  (troubleshooting): Add new section including http-pipelining issue

Approved by: brane


Modified: subversion/site/publish/docs/release-notes/1.9.html
--- subversion/site/publish/docs/release-notes/1.9.html (original)
+++ subversion/site/publish/docs/release-notes/1.9.html Fri May 20 19:53:16 2016
@@ -38,6 +38,8 @@
       >Many enhancements and bug fixes</a></li>
   <li><a href="#issues"
       >Known issues in the release</a></li>
+  <li><a href="#troubleshooting"
+      >Troubleshooting issues specific to this release</a></li>
 <p>Apache Subversion 1.9 is a superset of all previous Subversion
@@ -1451,6 +1453,54 @@ protocol.
 </div>  <!-- issues -->
+<div class="h2" id="troubleshooting">
+<h2>Troubleshooting issues specific to this release
+  <a class="sectionlink" href="#troubleshooting"
+    title="Link to this section">&para;</a>
+<p>Subversion 1.9 introduces new features and makes use of new techniques
+which can trigger problems not encountered in previous versions. In contrast to
+known issues, things listed here are not due to some bug or issue in Subversion
+itself and therefore cannot be fixed with a new patch release.
+This section lists all known problems and provides instructions to solve them,
+if they occur.</p>
+<div class="h3" id="http-pipelining-issue">
+<h3>Lock/Unlock errors related to HTTP pipelining
+  <a class="sectionlink" href="#http-pipelining-issue"
+    title="Link to this section">&para;</a>
+<p>Subversion 1.9.0 introduces the use of HTTP pipelining for locking/unlocking
+multiple files. While SVN detects whether HTTP pipelining is supported (and
+falls back to non HTTP pipelining mode, if it isn't), issues can arrise, if
+there are flaws or bugs with any of the protocols/applications involved in
+processing pipelined HTTP requests.</p>
+<p>Especially, if there are older proxies present in the network topology, it's
+possible that you run into issues, since being a technology which was
+introduced in HTTP/1.1 (and the full performance benefit is not expected unless
+you are using HTTP/2), this feature might have not been extensively tested by
+your proxy vendor.</p>
+<p>To troubleshoot whether the proxy is causing an issue, try to lock/unlock
+multiple files bypassing the proxy. If that works, please get in touch with
+the proxy vendor to notify him about the problem and ask for support.</p>
+<p>It's also appreciated, if you would let the SVN developers know about the
+effected proxy via the users mailing list so this troubleshooting section can
+be updated.</p>
+<p>At the moment there is one potentially known proprietary proxy running into
+this issue: Java-SSL-tunnel. See
+<a href=";dsMessageId=3171337">Tortoise
SVN mailing list</a>
+</div>  <!-- http-pipelining-issue -->
+</div>  <!-- troubleshooting -->
 <div class="h2" id="svn-1.7-deprecation">
 <h2>Subversion 1.7.x series no longer supported
   <a class="sectionlink" href="#svn-1.7-deprecation"

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