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<?xml version="1.0"?>
<!DOCTYPE document [
<!ENTITY project SYSTEM "project.xml">
]>
<document url="changelog.html">
&project;
<properties>
<author email="mturk@apache.org">Mladen Turk</author>
<title>Changelog</title>
</properties>
<body>
<section name="Preface">
<p>
This is the Changelog for Tomcat Connectors. This changelog
does not contain all updates and fixes to the Tomcat connectors (yet).
It should contain fixes made only after November 10th 2004, when the
new documentation project for JK was started.
</p>
</section>
<section name="Changes from the released JK 1.2.18">
<br />
<subsection name="Native">
<changelog>
<fix>
Using socklen_t in getsockopt. Also introducing jk_sock_t. (mturk)
</fix>
<update>
Allow recovery wait time below 60 seconds (new minimum is 1 second). (mturk)
</update>
</changelog>
</subsection>
</section>
<section name="Changes from the released JK 1.2.17">
<br />
<subsection name="Native">
<changelog>
<fix>
Fix hanging jk status worker when certain attributes are being updated
due to double locking. (rjung)
</fix>
<update>
Allow JkMount to behave like uriworkermap.properties
by parsing pipe symbol as two directive marker. (mturk)
</update>
</changelog>
</subsection>
</section>
<section name="Changes from the JK 1.2.16">
<br />
<subsection name="Native">
<changelog>
<update>
Added simple rewrite capability for IIS. Although simple it
will fulfill most needs. (mturk)
</update>
<update>
Added RECOVER_ABORT_IF_CLIENTERROR recovery_option that closes
the connection if client connection is broken during the request. (mturk)
</update>
<update>
Renamed cache_timeout directive to connection_pool_timeout. (mturk)
</update>
<update>
Added connection_pool_minsize directive. (mturk)
</update>
<update>
Deprecate recycle_timeout directive. (mturk)
</update>
<update>
Corrected some HTML syntax bugs in output of status worker. (rjung)
</update>
<update>
Added the refresh=n parameter to the status worker. It will update the display every n seconds. (rjung)
</update>
<update>
Balancer: Add attribute distance to balanced workers to express preferences between workers. (rjung)
</update>
<update>
Balancer: Add attribute jvm_route to balanced workers to be able to use the same target in different balancers. (rjung)
</update>
<update>
Status: Add lb_mult to status. (rjung)
</update>
<update>
Balancer: Make different balancing strategies work in a similar way (use lb_value, use decay during global maintenance, use integer factors for weights. (rjung)
</update>
<update>
Balancer: Improve locking. (rjung)
</update>
<update>
Balancer: Workers start slower after recovering. (rjung)
</update>
<update>
Balancer: Make different balancing strategies work in a similar way (use lb_value, use decay during global maintenance, use integer factors lb_mult for weights). (rjung)
</update>
<update>
Balancer: Move recovery check to global maintenance. (rjung)
</update>
<update>
Balancer: Add global maintenance method, that is called in only one process. (rjung)
</update>
<update>
Extend our use of autoconf to find a 32Bit and a 64Bit unsigned type and their printf formats. (rjung)
</update>
<update>
Logging: piped loggers for JkLogFile and Apache 1.3. (rjung)
</update>
<update>
Logging: Add PID to log lines for each log level apart from REQUEST. (rjung)
</update>
<update>
Logging: flush buffered logs to keep lines in correct order. Output final newline together with log message. (rjung)
</update>
<update>
Reducing shm size. (rjung)
</update>
<update>
Only log removing of old worker, when we actually do it. (rjung)
</update>
<fix>
<bug>37469</bug>: Fix shared memory close for forked childs.
The shared memory will be closed by the parent process. (mturk)
</fix>
<fix>
<bug>37332</bug>: Fix potential misuse of buffer length with
snprintf functions. (mturk)
</fix>
<fix>
<bug>38859</bug>: Protect mod_jk against buggy or malicious
AJP servers in the backend. Patch provided by Ruediger Pluem. (mturk)
</fix>
<fix>
<bug>38889</bug>: Use worker map sorting depending on the path
elements, to comply with Servlet spec. Patch provided by
Steve Revilak. (mturk)
</fix>
<update>
<bug>36138</bug>: Added Busyness lb method. Patch provided
by Chris Lamprecht. (mturk)
</update>
<fix>
Fix pessimistic locking mode. The patch correctly handles the
burst load, by syncing the access to the shared memory data. (mturk)
</fix>
<fix>
<bug>38806</bug>: Reclycle worker even if it is disabled.
This fixes hot-standby workers in error state. (mturk)
</fix>
<fix>
<bug>37167</bug>: Allow building with BSD-ish like make. (mturk)
</fix>
<fix>
ISAPI plugin (isapi_redirect.dll) did not provide correct request data
for IIS
to include in the IIS log. (markt)
</fix>
</changelog>
</subsection>
</section>
<section name="Changes from the released JK 1.2.15">
<br />
<subsection name="Native">
<changelog>
<fix>
Fix AJP13 Cookie2 parsing. Cookie2 was always send as Cookie.
Patch provided by Andre Gebers. (mturk)
</fix>
<fix>
<bug>35862</bug>: NSAPI plugin attempts to read freed memory and attempts to
dereference a null pointer. Patch provided by Brian Kavanagh. (markt)
</fix>
</changelog>
</subsection>
</section>
<section name="Changes from the released JK 1.2.14">
<br />
<subsection name="Native">
<changelog>
<fix>
Fix lb for worker mpm's with cachesize set to lower number then
ThreadsPerChild is. If retries is set to value larger then 3 sleep for
100 ms on each attempt. This enables to tune the connection cache,
and serialize incoming connections instead returning busy if connection
count is larger then cachesize. (mturk)
</fix>
<fix>
<bug>36525</bug>: Solaris core dump. (mturk)
</fix>
<fix>
<bug>36102</bug>: Worker actions do not persist. (mturk)
</fix>
<fix>
<bug>35864</bug>: Status worker doesn't list workers.
Patch provided by Martin Goldhahn. (mturk)
</fix>
<fix>
<bug>35809</bug>: JkMountCopy don't work for Apache 2.0 Patch provided by
Christophe Dubach. (mturk)
</fix>
<fix>
<bug>35298</bug>: Multiple JK/ISAPI redirectors on a single IIS site are not supported
Patch provided by Tim Whittington. (mturk)
</fix>
</changelog>
</subsection>
</section>
<section name="Changes from the released JK 1.2.13">
<br />
<subsection name="Native">
<changelog>
<fix>
<bug>34397</bug>: Emergency was handled as Error. (jfclere)
</fix>
<fix>
<bug>34474</bug>: // in URL were not handled correctly with Apache-1.3. (jfclere)
</fix>
<fix>
Use 64 bits int for transferred/read bytes.
</fix>
<update>
Added JkOptions +FlushPackets used to optimize memory
usage when sending large data. (mturk)
</update>
<update>
Added lock directive for load balancer that allows more acurate
load balancing in case of burst load. (mturk)
</update>
<update>
Added worker.maintain directive to allow customizing default 10
second timeout. On busy servers this value needs to be set on
higher value. (mturk)
</update>
<fix>
Fix for NetWare compiler to deal with different types between AP13
and AP2 SDKs. (fuankg)
</fix>
<update>
Emit much more legible user.dmp crash analysis output for WIN32. (wrowe)
</update>
<fix>
<bug>34558</bug>: Fix first failover request. (mturk)
</fix>
</changelog>
</subsection>
</section>
<section name="Changes from the released JK 1.2.12">
<br />
<subsection name="Native">
<changelog>
<update>
Added ForwardLocallAddres JkOptions flag for passing local instead remote
address. Useful for remote addr valve. (mturk)
</update>
<fix>Fix that worker not used, when stopped flag is true. (pero)
</fix>
<update>
Add loadbalance default worker secret attribute to the documentation (pero)
</update>
</changelog>
</subsection>
</section>
<section name="Changes from the released JK 1.2.11">
<br />
<subsection name="Native">
<changelog>
<fix>Backport SC_M_JK_STORED from JK2 for passing arbitrary
methods instead failing the request. (mturk)
</fix>
<fix>Added missing SEARCH and ACL http methods. (mturk)
</fix>
<update>
Add worker secret attribute to the documentation (pero)
</update>
<update>
Add a stopped flag to worker configuration. Set flag True and
complete traffic to worker is stopped.
Also update the Ant JkStatusUpdateTask at Tomcat 5.5.10 release.
Only usefull in a replicated session cluster.(pero)
</update>
<update>Added worker maintain function that will maintain all
the workers instead just the current one. This enables to recycle
the connections on all workers. (mturk)
</update>
<update>Use shutdown when recycling connections instead hard
breaking the socket. (mturk)
</update>
<update>Add unique directives checking. The directives if
unique are now overwritten instead concatenated. (mturk)
</update>
<update>Allow multiple worker.list directives. (mturk)
</update>
<fix>
<bug>34577</bug>: For IIS log original request instead loging
the request for ISAPI extension. (mturk)
</fix>
<fix>
<bug>34558</bug>: Make sure the returned status codes are the same
for ajp and lb workers. (mturk)
</fix>
<fix>
<bug>34423</bug>: Use APR_USE_FLOCK_SERIALIZE for setting log lock
on platforms like FreeBSD. Patch provided by Allan Saddi. (mturk)
</fix>
<fix>
<bug>33843</bug>: Fix obtaining LDFLAGS that were used for building
Apache HTTPD. Patch provided by Beat Kneubuehl. (mturk)
</fix>
<fix>
<bug>34358</bug>: Enable load balancer method configuration. (glenn)
</fix>
<fix>
<bug>34357</bug>: In some situations Apache 2 mod_jk could segfault
when the JkAutoAlias directive is used. (glenn)
</fix>
<update>
Add --enable-prefork to the documentation (pero)
</update>
</changelog>
</subsection>
</section>
<section name="Changes from the released JK 1.2.10">
<br />
<subsection name="Native">
<changelog>
<update>Set default shared memory to 64K instead 1M. (mturk)
</update>
<fix>Do not mark the worker in error state if headers are
larger then AJP13 limit. (mturk)
</fix>
<update>
On Series you should use the latest PTF for Apache 2.0
(which is now 2.0.52) and ad minima SI17402/SI17061 or cumulative
including them. (hgomez)
</update>
<update>
Change the xml status format to xml attribute syntax (pero)
</update>
<fix>
<bug>33248</bug>: Fix builds where apxs defines multiple
directories for APR includes. (mturk)
</fix>
<fix>
<bug>32696</bug>: Return 404 instead 403 when WEB-INF is requested
to comply with Servlet spec. (mturk)
</fix>
<update>Added ANT task for managing jkstatus. (pero)
</update>
<update>
If socket_timeout is set, check if socket is alive before
sending any request to Tomcat. (mturk)
</update>
<update>
Added JkMountFile for Apache web servers. This file can contain
uri mappings in the form (/url=worker), and is checked for
updates at regular 60 second interval. (mturk)
</update>
<update>
Added status worker for managing worker runtime data using
web page. (mturk)
</update>
<update>
Added load balancer method directive that is used for setting
the algorithm used for balancing workers. Method can be either
Request (default) or Traffic. (mturk)
</update>
<update>
Added shared memory to allow dynamic configuration. Shared memory
is needed only for unix platform and web servers having multiple
child processes. For Apache web server two new directives has been
added (JkShmFile and JkShmSize). (mturk)
</update>
<update>
Added textupdate mode to status worker to handle remote updates
from ant tasks.(pero)
</update>
<fix>
<bug>33562</bug>: Fix Reply_timeout when recovery_options
is larger than 1. Patch provided by Takashi Satou. (mturk)
</fix>
<fix>
<bug>33308</bug>: Fix segfaults when ForwardDirectories is enabled
with Apache 1.3
</fix>
</changelog>
</subsection>
</section>
<section name="Changes from the released JK 1.2.8">
<br />
<subsection name="Native">
<changelog>
<update>
Allow anyone to debug and diagnose stack dumps using windbg or any
other debugging tool, and (if they add the .pdb files to their
installation) to make sense of dr watson logs.
Patch provided by William A. Rowe (wrowe)
</update>
<fix>
Fix in_addr_t usage by using the real struct ignoring typedef.
Patch provided by William A. Rowe (wrowe)
</fix>
<fix>
Fix url rewriting by restoring the in place uri from which the
jsessionid was removed. (mturk)
</fix>
<update>
Make load balancer algorithm thread safe by introducing mutex
to the load balancer worker. (mturk)
</update>
<fix>
Fix sending error pages for IIS to client by adding Content-Type header
using correct api function call. (mturk)
</fix>
<fix>
<bug>32696</bug>: Prevent IIS from crushing when web-inf url was requested. (mturk)
</fix>
<update>
Use default cachesize for servers that support discovering the number of
threads per child process. (mturk).
</update>
<fix>
Fix Apache content-length header parsing using case insensitive compare. (billbarker)
</fix>
<fix>
Fix parsing AJP headers using case insensitive compare. (mturk)
</fix>
<fix>
Use infinite socket timeout if socket_timeout is set to zero or less then zero. (mturk)
</fix>
<update>
Change <b>balanced_workers</b> to <b>balance_workers</b> but keep
backward compatibility preserving the old directive. (mturk).
</update>
<fix>
Fix ajp initialization for workers with cache_size set to zero. (mturk)
</fix>
<update>
<bug>32317</bug>: Making mod_jk replication aware (Clustering Support).
Patch provided by Rainer Jung. (mturk).
</update>
<fix>
<bug>31132</bug>: Core dump when JkLogFile is missing from conf. (mturk)
</fix>
</changelog>
</subsection>
</section>
<section name="Changes from the released JK 1.2.6">
<br />
<subsection name="Native">
<changelog>
<update>
Added new property named recover_time that can be used to change the
default 60 second recover time. (mturk)
</update>
<update>
Added custom retries for worker, so we don't depend on default setting.
If set to a number grater then 3, it will sleep for 100ms on retry greater
then 3 and then try again. (mturk)
</update>
<update>
Added JkWorkerProperty directive that enables omiting workers.properties file.
For example: JkWorkerProperty worker.ajp13a.port=8009. (mturk)
</update>
<fix>
Check all JSESSIONID cookies for a valid jvmRoute. If you have multiple Tomcats
with overlapping domains, then you can get multiple cookies without a defined order.
This will route correctly as long as the different domains don't have any
Tomcats in common. (billbarker)
</fix>
<update>
Added JkUnMount directive for negative mappings that works as opposite to JkMount directives.
It is used for blocking of particular URL or content type. (mturk)
</update>
<update>
Added wildchar match uri mappings. One can now use JkMount to
map /app/*/servlet/* or /app?/*/*.jsp. (mturk)
</update>
<update>
Rewrite the logging by adding Trace options. (mturk)
</update>
<update>
Added socket_timeout property that sets the timeout
for the socket itself. (mturk)
</update>
<fix>
Changed socket_timeout property to recycle_timeout. This better
explains what the directive actually does. (mturk)
</fix>
<fix>
Changed the load balancer algorithm.
The idea behind this new scheduler is the following:
lbfactor is <i>how much we expect this worker to work</i>,
or <i>the worker's work quota</i>.
lbstatus is <i>how urgent this worker has to work to fulfill its quota
of work</i>. We distribute each worker's work quota to the worker, and then look
which of them needs to work most urgently (biggest lbstatus). This
worker is then selected for work, and its lbstatus reduced by the
total work quota we distributed to all workers. Thus the sum of all
lbstatus does not change.(*)
If some workers are disabled, the others will
still be scheduled correctly. (mturk)
</fix>
</changelog>
</subsection>
</section>
<section name="JK 2">
<p>JK2 has been put in maintainer mode and no further development will take place.
The reason for shutting down JK2 development was the lack of developers interest.
Other reason was lack of users interest in adopting JK2, caused by configuration
complexity when compared to JK.
</p>
</section>
</body>
</document>
|
