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From "Sergey Beryozkin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CXF-6642) Memory Leak in ResponseImpl.readEntity()
Date Thu, 15 Oct 2015 20:46:05 GMT

    [ https://issues.apache.org/jira/browse/CXF-6642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14959586#comment-14959586
] 

Sergey Beryozkin commented on CXF-6642:
---------------------------------------

Not with 2.0 API, only with WebClient: 
{code:java}
Book b = wc.get(Book.class);
Response r = wc.getResponse();
{code}

> Memory Leak in ResponseImpl.readEntity()
> ----------------------------------------
>
>                 Key: CXF-6642
>                 URL: https://issues.apache.org/jira/browse/CXF-6642
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>    Affects Versions: 3.1.2, 3.1.3
>         Environment: Mac OS X 10.10.5, Spring 4.2.0
>            Reporter: Chester Kim
>            Assignee: Sergey Beryozkin
>            Priority: Critical
>              Labels: client, cxf
>             Fix For: 3.0.7, 3.1.4
>
>
> Massive number of ResponseImpl instances are not garbage collected after calling readEntity.
 By looking at VisualVM, it seems like those are indirectly referred by something stored in
ThreadLocal which is used by context resolving and never been removed after all.   Our production
instance actually caused OutOfMemory errors after this.   It might be related to https://issues.apache.org/jira/browse/CXF-6458
and looks simiar to https://java.net/jira/browse/JERSEY-2463 but not sure.  Note this only
happens when I used thread pool.
> My workaround was bypassing readEntity() and deal with inputstream directly like following
which is not quite desirable but works for now.
> {code}
>     private static Response copy(Response response) {
>         return Optional.ofNullable(response)
>                 .map(r -> r.getEntity())
>                 .filter(e -> e instanceof InputStream)
>                 .map(is -> newResponse(response.getStatus(), (InputStream)is))
>                 .orElse(response);
>     }
>     private static Response newResponse(int status, InputStream is) {
>         Response response = Response.serverError().build();
>         try {
>             String payload = IOUtils.toString(is);
>             response = Response.status(status).entity(payload).build();
>         } catch (IOException e) {
>             log.error("Failed to read entity from response", e);
>         } finally {
>             try {
>                 is.close();
>             } catch (IOException e) {
>                 log.error("Failed to close InputStream after reading entity from response",
e);
>             }
>         }
>         return response;
>     }
> {code}



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