Details
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Bug
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Resolution: Obsolete
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Major
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EAP_EWP 5.1.2
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None
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Release Notes
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Not Yet Documented
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NEW
Description
TimedCachePolicy.getValidKeys() method and TimedCachePolicy.get() method do not synchronize. If entryMap.remove(key) on line 269th is executed by other thread before processing of iter.next() on line 364th, the ConcurrentModificationException will occur in line 364th.
258: public Object get(Object key) 259: { 260: TimedEntry entry = (TimedEntry) entryMap.get(key); 261: if( entry == null ) 262: return null; 263: 264: if( entry.isCurrent(now) == false ) 265: { // Try to refresh the entry 266: if( entry.refresh() == false ) 267: { // Failed, remove the entry and return null 268: entry.destroy(); 269: entryMap.remove(key); 270: return null; 271: } 272: } 273: Object value = entry.getValue(); 274: return value; 275: } 356: public List getValidKeys() 357: { 358: ArrayList validKeys = new ArrayList(); 359: synchronized( entryMap ) 360: { 361: Iterator iter = entryMap.entrySet().iterator(); 362: while( iter.hasNext() ) 363: { 364: Map.Entry entry = (Map.Entry) iter.next(); 365: TimedEntry value = (TimedEntry) entry.getValue(); 366: if( value.isCurrent(now) == true ) 367: validKeys.add(entry.getKey()); 368: } 369: } 370: return validKeys; 371: }
In the case of seam application, if this issue occurs in processing of first time access, that application cannot be used any longer.
2012-11-08 09:18:53,935 SEVERE [facelets.viewhandler] (http-127.0.0.1-8080-1) Error Rendering View[/home.xhtml] java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793) at java.util.HashMap$EntryIterator.next(HashMap.java:834) at java.util.HashMap$EntryIterator.next(HashMap.java:832) at org.jboss.util.TimedCachePolicy.getValidKeys(TimedCachePolicy.java:364) at org.jboss.virtual.plugins.cache.IterableTimedVFSCache.findContext(IterableTimedVFSCache.java:65) at org.jboss.virtual.plugins.cache.CombinedVFSCache.findContext(CombinedVFSCache.java:116) at org.jboss.virtual.plugins.registry.DefaultVFSRegistry.getContext(DefaultVFSRegistry.java:132) at org.jboss.virtual.VFS.getVFS(VFS.java:203) at org.jboss.virtual.VFS.createNewRoot(VFS.java:228) at org.jboss.virtual.VFS.getRoot(VFS.java:244) at org.jboss.virtual.VFS.getRoot(VFS.java:313) at com.sun.facelets.util.VFSClasspath.search(VFSClasspath.java:48) at com.sun.facelets.util.Classpath.search(Classpath.java:63) at com.sun.facelets.compiler.TagLibraryConfig.loadImplicit(TagLibraryConfig.java:428) at com.sun.facelets.compiler.Compiler.initialize(Compiler.java:87) at com.sun.facelets.compiler.Compiler.compile(Compiler.java:104) --- snip --- 2012-11-08 09:18:54,053 WARN [com.arjuna.ats.arjuna.logging.arjLoggerI18N] (http-127.0.0.1-8080-1) [com.arjuna.ats.arjuna.coordinator.BasicAction_40] - Abort called on already aborted atomic action 7f000001:96cd:509af812:74 2012-11-08 09:19:19,715 SEVERE [facelets.viewhandler] (http-127.0.0.1-8080-1) Error Rendering View[/home.xhtml] javax.el.ELException: /home.xhtml: Property 'login' not found on type org.jboss.seam.security.Identity at com.sun.facelets.compiler.AttributeInstruction.write(AttributeInstruction.java:53) at com.sun.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:39) at com.sun.facelets.compiler.UILeaf.encodeAll(UILeaf.java:149) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:933) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) --- snip --- 2012-11-08 09:19:23,182 SEVERE [facelets.viewhandler] (http-127.0.0.1-8080-1) Error Rendering View[/home.xhtml] javax.el.ELException: /home.xhtml: Property 'login' not found on type org.jboss.seam.security.Identity at com.sun.facelets.compiler.AttributeInstruction.write(AttributeInstruction.java:53) at com.sun.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:39) at com.sun.facelets.compiler.UILeaf.encodeAll(UILeaf.java:149) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:933) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) --- snip ---2012-11-08 09:20:04,943 SEVERE [facelets.viewhandler] (http-127.0.0.1-8080-1) Error Rendering View[/home.xhtml] javax.el.ELException: /home.xhtml: Property 'login' not found on type org.jboss.seam.security.Identity ....
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