[YANGTOOLS-539] org.opendaylight.controller.config.facade.xml.osgi.YangStoreService$CapabilityChangeNotifier.run() thread is hanging karaf Created: 29/Oct/15  Updated: 10/Apr/22  Resolved: 03/Nov/15

Status: Resolved
Project: yangtools
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Bug
Reporter: Luis Gomez Assignee: Robert Varga
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

Operating System: All
Platform: PC

Attachments: PNG File Screen Shot 2015-10-29 at 3.04.44 PM.png     PNG File Screen Shot 2015-10-29 at 3.48.37 PM.png    
External issue ID: 4556

 Description   

So I just did few feature install tests with yourkit connected:

feature:install odl-openflowplugin-flow-services
feature:install odl-bgpcep-bgp-all

and I get karaf urresponsive with 100% of CPU occupied with this thread (see attachment):

org.opendaylight.controller.config.facade.xml.osgi.YangStoreService$CapabilityChangeNotifier.run()

BR/Luis

 Comments   
Comment by Luis Gomez [ 29/Oct/15 ]

Attachment Screen Shot 2015-10-29 at 3.04.44 PM.png has been added with description: Yourkit snapshot

Comment by Luis Gomez [ 29/Oct/15 ]

Also after a while the system is hanged memory also runs out so I took heap dump and analized in yourkit (see 2nd attachment), the below class takes 1.5GB:

org.opendaylight.yangtools.yang.model.api.SchemaPath$AbsoluteSchemaPath 48747939 1559934048 3346727519

BR/Luis

Comment by Luis Gomez [ 29/Oct/15 ]

Attachment Screen Shot 2015-10-29 at 3.48.37 PM.png has been added with description: Memory Analysis

Comment by Robert Varga [ 31/Oct/15 ]

This is caused by inefficient SchemaPath construction in parser. Preliminary patch to alleviate the hurt: https://git.opendaylight.org/gerrit/29064

Comment by Robert Varga [ 31/Oct/15 ]

That link should be https://git.opendaylight.org/gerrit/29065

Comment by Robert Varga [ 31/Oct/15 ]

Real fix: https://git.opendaylight.org/gerrit/29071

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