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https://issues.apache.org/jira/browse/FLEX-35279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15901599#comment-15901599
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Alex Harui commented on FLEX-35279:
-----------------------------------
Well, you can try setting values to null before setting them to something else,
but I would not expect it to make a difference.
The main question to establish is whether the hierarchical data structure is
complex or not, or if other work is being done at that moment in time and the
expanding of the data structure is just the unlucky one. For example, if you
always are 10th in line to get on the subway, there is a chance that you will
occasionally have to wait for the next train if the 9 people occasionally take
too long to get on the train.
But usually, large data structures are expensive to process. And if that's the
case, it doesn't really matter what you do beforehand, because at some point,
if you call expandAll, it will have to visit every node in the hierarchy. And
if there are enough nodes and enough work needs to be done on each node, you
are going to run out of time.
Pseudo-threading as a way to do large chunks of work in snippets, so you never
hog resources for too long. It takes longer to get done, but it is the polite
way of sharing.
You can use getTimer() to see how many milliseconds it takes for expandAll to
return. If it is in the 20 or 30 second range, you are likely to get a 60
second timeout when the system is busy.
> Apache Flex Screen freeze
> -------------------------
>
> Key: FLEX-35279
> URL: https://issues.apache.org/jira/browse/FLEX-35279
> Project: Apache Flex
> Issue Type: Bug
> Components: Advanced Data Grid
> Affects Versions: Apache Flex 4.15.0
> Environment: IE, Firefox, and Chrome Browsers
> Reporter: Scott Capilouto
> Priority: Critical
>
> We have an application where we are seeing intermittently screen freezes with
> the following error. Apache Flex appears to freeze for a minute to a minute
> and half before resuming.
> Would you happen to know what might be causing this?
> We are able to see this error when running from Firefox in Debug mode:
> Error: Error #1502: A script has executed for longer than the default timeout
> period of 15 seconds.
> at
> mx.controls::AdvancedDataGrid/expandAll()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/advancedgrids/src/mx/controls/AdvancedDataGrid.as:5780]
> at
> mx.controls::AdvancedDataGrid/collectionChangeHandler()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/advancedgrids/src/mx/controls/AdvancedDataGrid.as:8232]
> at flash.events::EventDispatcher/dispatchEventFunction()
> at flash.events::EventDispatcher/dispatchEvent()
> at
> mx.collections::HierarchicalCollectionView/internalRefresh()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/advancedgrids/src/mx/collections/HierarchicalCollectionView.as:1272]
> at
> mx.collections::HierarchicalCollectionView/collectionChangeHandler()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/advancedgrids/src/mx/collections/HierarchicalCollectionView.as:1459]
> at flash.events::EventDispatcher/dispatchEventFunction()
> at flash.events::EventDispatcher/dispatchEvent()
> at mx.collections::HierarchicalData/set
> source()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/advancedgrids/src/mx/collections/HierarchicalData.as:153]
> at
> mx.binding::Binding/defaultDestFunc()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/binding/Binding.as:305]
> at Function/http://adobe.com/AS3/2006/builtin::call()
> at
> mx.binding::Binding/innerExecute()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/binding/Binding.as:511]
> at Function/http://adobe.com/AS3/2006/builtin::apply()
> at
> mx.binding::Binding/wrapFunctionCall()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/binding/Binding.as:418]
> at
> mx.binding::Binding/execute()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/binding/Binding.as:356]
> at
> mx.binding::Binding/watcherFired()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/binding/Binding.as:539]
> at
> mx.binding::Watcher/notifyListeners()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/binding/Watcher.as:317]
> at
> mx.binding::PropertyWatcher/eventHandler()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/binding/PropertyWatcher.as:385]
> at flash.events::EventDispatcher/dispatchEventFunction()
> at flash.events::EventDispatcher/dispatchEvent()
> at com.homedepot.mm.sv.esvs.model::SVSModelLocator/dispatchEvent()
> at com.homedepot.mm.sv.esvs.model::SVSModelLocator/set acLocalLineItemData()
> at
> com.homedepot.mm.sv.esvs.view.order::ProductEntry/refreshLineItemDataGrid()[C:\bkpppp\esvs\MMSVESVSWeb\src\com\homedepot\mm\sv\esvs\view\order\ProductEntry.mxml:6638]
> at
> com.homedepot.mm.sv.esvs.view.order::OrderMaintenanceWindow/measureServiceViewHideHandler()[C:\bkpppp\esvs\MMSVESVSWeb\src\com\homedepot\mm\sv\esvs\view\order\OrderMaintenanceWindow.mxml:1111]
> at flash.events::EventDispatcher/dispatchEventFunction()
> at flash.events::EventDispatcher/dispatchEvent()
> at
> mx.core::UIComponent/dispatchEvent()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/core/UIComponent.as:13688]
> at
> mx.core::UIComponent/setVisible()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/core/UIComponent.as:3301]
> at
> mx.containers::ViewStack/commitSelectedIndex()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/mx/src/mx/containers/ViewStack.as:1227]
> at
> mx.containers::ViewStack/commitProperties()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/mx/src/mx/containers/ViewStack.as:767]
> at
> mx.core::UIComponent/validateProperties()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/core/UIComponent.as:8751]
> at
> mx.managers::LayoutManager/validateProperties()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/managers/LayoutManager.as:605]
> at
> mx.managers::LayoutManager/doPhasedInstantiation()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/managers/LayoutManager.as:821]
> at
> mx.managers::LayoutManager/validateNow()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/managers/LayoutManager.as:886]
> at
> mx.core::Application/resizeHandler()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/mx/src/mx/core/Application.as:1742]
> at
> mx.core::Application/commitProperties()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/mx/src/mx/core/Application.as:1095]
> at
> mx.core::UIComponent/validateProperties()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/core/UIComponent.as:8751]
> at
> mx.managers::LayoutManager/validateProperties()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/managers/LayoutManager.as:605]
> at
> mx.managers::LayoutManager/doPhasedInstantiation()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/managers/LayoutManager.as:821]
> at
> mx.managers::LayoutManager/doPhasedInstantiationCallback()[/Users/justinmclean/Documents/ApacheFlex4.15/frameworks/projects/framework/src/mx/managers/LayoutManager.as:1188]
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