9:33 a.m.
[
https://issues.redhat.com/browse/WFLY-13259?page=com.atlassian.jira.plugi...
]
Scott Marlow commented on WFLY-13259:
-------------------------------------
Attached is beforeOOM.hprof.zip which was captured from before the OOM occurred (ran
WildFly with min/max heap size of 64mb to keep the heap dump zip size under 50mb).
Also attached is afterOOM.hprof.zip which was captured after getting an excessive number
of GCs in a short time:
{quote}
10:25:44,688 WARN [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (default task-2) SQL
Error: 90108, SQLState: 90108
10:25:44,856 ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (default task-2) Out
of memory.; SQL statement:
select children0_.PARENT_ID as PARENT_I3_0_0_, children0_.CHILD_ID as CHILD_ID1_0_0_,
children0_.CHILD_ID as CHILD_ID1_0_1_, children0_.CHILD_NAME as CHILD_NA2_0_1_,
children0_.PARENT_ID as PARENT_I3_0_1_ from CHILD children0_ where children0_.PARENT_ID=?
[90108-197]
10:25:44,934 WARN [org.jboss.modules.define] (default task-2) Failed to define class
org.hibernate.internal.util.JdbcExceptionHelper in Module "org.hibernate"
version 5.3.15.Final from local module loader @5f2108b5 (finder: local module finder
@31a5c39e (roots:
/home/smarlow/work/wildfly/dist/target/wildfly-20.0.0.Beta1-SNAPSHOT/modules,/home/smarlow/work/wildfly/dist/target/wildfly-20.0.0.Beta1-SNAPSHOT/modules/system/layers/base)):
java.lang.OutOfMemoryError: GC overhead limit exceeded
10:25:45,106 ERROR [io.undertow.request] (default task-2) UT005023: Exception handling
request to /simple-hibernate-war/addChild: java.lang.OutOfMemoryError: GC overhead limit
exceeded
10:25:45,411 ERROR [org.jboss.as.txn] (default task-2) WFLYTX0003: APPLICATION ERROR:
transaction still active in request with status 0
10:25:46,368 ERROR [io.undertow.request] (default task-2) UT005071: Undertow request
failed HttpServerExchange{ GET /simple-hibernate-war/addChild}:
java.lang.OutOfMemoryError: GC overhead limit exceeded
10:25:47,204 WARN [org.jboss.modules.define] (default task-2) Failed to define class
io.undertow.server.HttpServerExchange$ReadDispatchChannel in Module
"io.undertow.core" version 2.0.30.Final from local module loader @5f2108b5
(finder: local module finder @31a5c39e (roots:
/home/smarlow/work/wildfly/dist/target/wildfly-20.0.0.Beta1-SNAPSHOT/modules,/home/smarlow/work/wildfly/dist/target/wildfly-20.0.0.Beta1-SNAPSHOT/modules/system/layers/base)):
java.lang.OutOfMemoryError: GC overhead limit exceeded
10:25:47,543 ERROR [org.jboss.threads.errors] (default task-2) Thread Thread[default
task-2,5,main] threw an uncaught exception: java.lang.OutOfMemoryError: GC overhead limit
exceeded
{quote}.
[~spotra] please do answer the questions above.
Scott
Memory leak in Hibernate pending-puts cache when L2 cache is enabled
--------------------------------------------------------------------
Key: WFLY-13259
URL: https://issues.redhat.com/browse/WFLY-13259
Project: WildFly
Issue Type: Bug
Components: JPA / Hibernate
Affects Versions: 18.0.1.Final, 19.0.0.Final
Reporter: Sorin Potra
Assignee: Scott Marlow
Priority: Critical
Attachments: PathToGCRoots_strong_refs.PNG, afterOOM.hprof.zip,
beforeOOM.hprof.zip, pending-puts-leak.PNG, simple-hibernate-war-client.zip,
simple-hibernate-war.war, simple-hibernate-war.zip
Under certain conditions, described below, WildFly / Hibernate can leak memory into the
pending-puts cache eventually causing an OutOfMemoryError. Attached you can find a web
application and a standalone client that can be used to reproduce the problem. The web app
defines two entities: a Parent and a Child. There is a bidirectional one-to-many
relationship between the Parent and the Child. JPA L2 cache is enabled (Infinispan is the
cache provider).
Repeatedly executing a transaction that creates a new Child and adds it to the list of
children in the Parent will cause the memory usage to increase steadily until OOM is
encountered. If the execution of these transactions is stopped before reaching OOM, the
memory will be reclaimed after a few minutes of inactivity.
Attached you can find the following:
- simple-hibernate-war.war - the web app that can be deployed in WildFly to reproduce the
issue.
- simple-hibernate-war.zip - the source code for the above web app. The servlet that is
invoked by the client to create and persist a new Child is
com.microfocus.sa.web.AddChildServlet
- simple-hibernate-war-client.zip - the standalone client that can be used to invoke the
AddChildServlet. After unzipping the archive, the client can be run with the following
command from the client folder:
java -cp bin com.microfocus.sa.client.AddChildClient
If you need to run the client multiple times, you have to restart WildFly in between the
runs, to start from a fresh state (the web app uses the h2 in memory databasewhich is
reset at each restart).
- pending-puts-leak.PNG - a screeshot from Memory Analyzer showing a leaked SessionImpl
instance
--
This message was sent by Atlassian Jira
(v7.13.8#713008)
2319
days inactive
2319
days old
0 comments
1 participants
participants (1)
-
Scott Marlow (Jira)