This is an automated email from the ASF dual-hosted git repository.
markt pushed a commit to branch 8.5.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git
The following commit(s) were added to refs/heads/8.5.x by this push:
new 846ff9a Improve clean-up after an OOME during request processing
846ff9a is described below
commit 846ff9afb4bd3c1fec582886fb183c83e1ca0b70
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Mon May 13 20:10:13 2019 +0100
Improve clean-up after an OOME during request processing
---
.../apache/catalina/core/StandardWrapperValve.java | 77 +++++++++++-----------
java/org/apache/coyote/AbstractProtocol.java | 8 ++-
java/org/apache/coyote/LocalStrings.properties | 1 +
webapps/docs/changelog.xml | 4 ++
4 files changed, 50 insertions(+), 40 deletions(-)
diff --git a/java/org/apache/catalina/core/StandardWrapperValve.java
b/java/org/apache/catalina/core/StandardWrapperValve.java
index ffcba85..c7b7590 100644
--- a/java/org/apache/catalina/core/StandardWrapperValve.java
+++ b/java/org/apache/catalina/core/StandardWrapperValve.java
@@ -253,50 +253,49 @@ final class StandardWrapperValve
context.getName()), e);
throwable = e;
exception(request, response, e);
- }
-
- // Release the filter chain (if any) for this request
- if (filterChain != null) {
- filterChain.release();
- }
-
- // Deallocate the allocated servlet instance
- try {
- if (servlet != null) {
- wrapper.deallocate(servlet);
+ } finally {
+ // Release the filter chain (if any) for this request
+ if (filterChain != null) {
+ filterChain.release();
}
- } catch (Throwable e) {
- ExceptionUtils.handleThrowable(e);
-
container.getLogger().error(sm.getString("standardWrapper.deallocateException",
- wrapper.getName()), e);
- if (throwable == null) {
- throwable = e;
- exception(request, response, e);
- }
- }
- // If this servlet has been marked permanently unavailable,
- // unload it and release this instance
- try {
- if ((servlet != null) &&
- (wrapper.getAvailable() == Long.MAX_VALUE)) {
- wrapper.unload();
- }
- } catch (Throwable e) {
- ExceptionUtils.handleThrowable(e);
-
container.getLogger().error(sm.getString("standardWrapper.unloadException",
- wrapper.getName()), e);
- if (throwable == null) {
- exception(request, response, e);
+ // Deallocate the allocated servlet instance
+ try {
+ if (servlet != null) {
+ wrapper.deallocate(servlet);
+ }
+ } catch (Throwable e) {
+ ExceptionUtils.handleThrowable(e);
+
container.getLogger().error(sm.getString("standardWrapper.deallocateException",
+ wrapper.getName()), e);
+ if (throwable == null) {
+ throwable = e;
+ exception(request, response, e);
+ }
}
- }
- long t2=System.currentTimeMillis();
- long time=t2-t1;
- processingTime += time;
- if( time > maxTime) maxTime=time;
- if( time < minTime) minTime=time;
+ // If this servlet has been marked permanently unavailable,
+ // unload it and release this instance
+ try {
+ if ((servlet != null) &&
+ (wrapper.getAvailable() == Long.MAX_VALUE)) {
+ wrapper.unload();
+ }
+ } catch (Throwable e) {
+ ExceptionUtils.handleThrowable(e);
+
container.getLogger().error(sm.getString("standardWrapper.unloadException",
+ wrapper.getName()), e);
+ if (throwable == null) {
+ exception(request, response, e);
+ }
+ }
+ long t2=System.currentTimeMillis();
+ long time=t2-t1;
+ processingTime += time;
+ if( time > maxTime) maxTime=time;
+ if( time < minTime) minTime=time;
+ }
}
diff --git a/java/org/apache/coyote/AbstractProtocol.java
b/java/org/apache/coyote/AbstractProtocol.java
index be2bd40..684582f 100644
--- a/java/org/apache/coyote/AbstractProtocol.java
+++ b/java/org/apache/coyote/AbstractProtocol.java
@@ -945,7 +945,13 @@ public abstract class AbstractProtocol<S> implements
ProtocolHandler,
// Future developers: if you discover any other
// rare-but-nonfatal exceptions, catch them here, and log as
// above.
- catch (Throwable e) {
+ catch (OutOfMemoryError oome) {
+ // Try and handle this here to give Tomcat a chance to close
the
+ // connection and prevent clients waiting until they time out.
+ // Worst case, it isn't recoverable and the attempt at logging
+ // will trigger another OOME.
+ getLog().error(sm.getString("abstractConnectionHandler.oome"),
oome);
+ } catch (Throwable e) {
ExceptionUtils.handleThrowable(e);
// any other exception or error is odd. Here we log it
// with "ERROR" level, so it will show up even on
diff --git a/java/org/apache/coyote/LocalStrings.properties
b/java/org/apache/coyote/LocalStrings.properties
index 4c59741..33fc21f 100644
--- a/java/org/apache/coyote/LocalStrings.properties
+++ b/java/org/apache/coyote/LocalStrings.properties
@@ -17,6 +17,7 @@ abstractConnectionHandler.connectionsGet=Found processor
[{0}] for socket [{1}]
abstractConnectionHandler.error=Error reading request, ignored
abstractConnectionHandler.ioexception.debug=IOExceptions are normal, ignored
abstractConnectionHandler.negotiatedProcessor.fail=Failed to create Processor
for negotiated protocol [{0}]
+abstractConnectionHandler.oome=Failed to complete processing of a request
abstractConnectionHandler.process=Processing socket [{0}] with status [{1}]
abstractConnectionHandler.processorPop=Popped processor [{0}] from cache
abstractConnectionHandler.protocolexception.debug=ProtocolExceptions are
normal, ignored
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index 0b50e22..41c67ec 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -60,6 +60,10 @@
set using a canonical path which in turn meant resource URLs were not
being constructed as expected. (markt)
</fix>
+ <fix>
+ Make a best efforts attempt to clean-up if a request fails during
+ processing due to an <code>OutOfMemoryException</code>. (markt)
+ </fix>
</changelog>
</subsection>
<subsection name="Coyote">
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org
For additional commands, e-mail: dev-h...@tomcat.apache.org
