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https://issues.apache.org/jira/browse/WICKET-6177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15958670#comment-15958670
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Thomas Heigl commented on WICKET-6177:
--------------------------------------
It fails with:
{code}
16816 [read] ERR o.a.w.p.memory.HttpSessionDataStore - Cannot store the
data for page with id '2' in session with id '528610207C4F0751CA70F4B34DB75DBE'
{code}
The code in {{HttpSessionDataStore}}:
{code}
@Override
public void storeData(String sessionId, int pageId, byte[] pageAsBytes)
{
PageTable pageTable = getPageTable(true, true);
if (pageTable != null)
{
pageTable.storePage(pageId, pageAsBytes);
if (LOG.isDebugEnabled())
{
LOG.debug("Stored '{}' bytes for page '{}' in
session '{}'",
pageAsBytes.length, pageId,
sessionId);
}
evictionStrategy.evict(pageTable);
}
else
{
LOG.error("Cannot store the data for page with id '{}'
in session with id '{}'",
pageId, sessionId);
}
}
{code}
It tries to get the page table from a session attribute and the session is not
available after asynchronous serialization.
> Blocking page serialization
> ---------------------------
>
> Key: WICKET-6177
> URL: https://issues.apache.org/jira/browse/WICKET-6177
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 7.4.0
> Environment: any
> Reporter: Martin Makundi
> Labels: serialization
> Attachments: 6177.tgz, Wicket_Quickstart_7.zip
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> We have a performance issue with our Wicket app, page serialization causes
> inconvenience to user because PageStoreManager.storeTouchedPages() blocks the
> request until pageSerializer.serialize(page) has been handled.
> Could this be solved by serializing the page in a separate thread and let the
> request complete?
> The problem we have is that user is making quick small ajax modifications to
> the page but serialization + network latency makes the delay very
> inconvenient. If serialization could be done in separate thread, user would
> feel only the network delay which is bearable.
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