Salut,
Roman Pokhodzhai wrote:
> Hi All,
>
> If you use tasks recycling for
> com.sun.enterprise.web.connector.grizzly.SelectorThread in your
> application (it is used by default) then you get the following
> reference chain that keeps the application class loader after the
> application is undeployed:
Hum..I'm not sure the application itself is referenced here. Can you
elaborate a little?
>
> --> com.sun.enterprise.web.connector.grizzly.SelectorThread_at_0xe0a64e0
> (433 bytes) (field processorTasks:)
> --> java.util.concurrent.ConcurrentLinkedQueue_at_0xe0ba468 (16 bytes)
> (field head:)
> --> java.util.concurrent.ConcurrentLinkedQueue$Node_at_0xe0caa80 (16
> bytes) (field next:)
> --> java.util.concurrent.ConcurrentLinkedQueue$Node_at_0x116288d0 (16
> bytes) (field item:)
> --> com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask_at_0xe0f6180
> (169 bytes) (field request:)
> --> org.apache.coyote.Request_at_0xe10bef0 (153 bytes) (field notesManager:)
> --> org.apache.coyote.NotesManagerImpl_at_0xe16b140 (12 bytes) (field notes:)
> --> [Ljava.lang.Object;@0xe1c6e90 (136 bytes) (Element 1 of
> [Ljava.lang.Object;@0xe1c6e90:)
> --> com.sun.enterprise.web.connector.coyote.PwcCoyoteRequest_at_0x10cda420
> (190 bytes) (field filterChain:)
> --> org.apache.catalina.core.ApplicationFilterChain_at_0x10ce8d48 (28
> bytes) (field filters:)
> --> [Lorg.apache.catalina.core.ApplicationFilterConfig;@0x10ce8d68 (48
> bytes) (Element 0 of
> [Lorg.apache.catalina.core.ApplicationFilterConfig;@0x10ce8d68:)
> --> org.apache.catalina.core.ApplicationFilterConfig_at_0x10e2de48 (20
> bytes) (field context:)
> --> com.sun.enterprise.web.WebModule_at_0xf3b73b8 (501 bytes) (field
> parentClassLoader:)
> --> com.sun.enterprise.loader.EJBClassLoader_at_0xefde040 (88 bytes)
>
> This trace shows that Request objects are not fully recycled. Their
> 'notes' are not recycled.
> You can also see it at org.apache.coyote.Request.recycle.
>
>
> It there some idea behind it?
Yes, the notes are used to avoid object creation. As an example, we are
putting CoyoteRequest/Response in the note we don't have to re-create
those object.
Or it's just a bug?
No. Tomcat does this as well.
A+
-- Jeanfrancois
>
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