APAR status
Closed as program error.
Error description
The com.ibm.ws.jaxrs.2.0.client.JAXRSClientImpl is using HashSet<WebClient> for baseClients member variable. These are freed only when the whole JAXRSClientImpl is closed using the close() method. This may lead to a memory leak like this: |- 589,666,752 (62.42%) [40] 5 com/ibm/ws/jaxrs20/client/JAXRSClientImpl |- 588,912,080 (62.34%) [16] 1 java/util/HashSet 0xc86b58a8 |- 588,912,064 (62.34%) [40] 1 java/util/HashMap 0xc86b5b28 |- 588,912,024 (62.34%) [131,072] 12,208 array of java/util/HashMap$Node |- 1,412,368 (0.15%) [24] 3 java/util/HashMap$Node 0xd5fbd5a0 |- 191,944 (0.02%) [24] 3 java/util/HashMap$Node 0xd7f5d860 |- 191,888 (0.02%) [24] 3 java/util/HashMap$Node 0xd3b76d50
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of JAXRS application on IBM * * WebSphere Application Server * **************************************************************** * PROBLEM DESCRIPTION: A memory leak may occur in * * com.ibm.ws.jaxrs.2.0.client.JAXRSClient * * Impl may occur for JAXRS applications. * **************************************************************** * RECOMMENDATION: * **************************************************************** The JAXRSClientImpl instance (created when a Client instance is created) holds a reference to a WebClient object that is part of the WebTarget for every root-level WebTarget created by that client. The WebClient is only stored so that it can be closed appropriately when the Client is closed. This can cause a memory leak since it is a hard reference.
Problem conclusion
Switched the code in com.ibm.ws.jaxrs.2.0.client.JAXRSClient Impl to use a WeakHashMap instead so the references will be cleaned up and the memory leak avoided. The fix for this APAR is targeted for inclusion in fix pack 9.0.5.6. For more information, see 'Recommended Updates for WebSphere Application Server': https://www.ibm.com/support/pages/node/715553
Temporary fix
Comments
APAR Information
APAR number
PH28458
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
900
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-08-13
Closed date
2020-09-08
Last modified date
2020-09-08
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WEBS APP SERV N
Fixed component ID
5724H8800
Applicable component levels
R900 PSY
UP
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"9.0","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
01 November 2021