Hey Peter,
So as a disclaimer, I haven't researched this thoroughly, but wanted to share
my thoughts. The patch, which we are running in production, quelled the
surface exception of this class not being serializable, but I believe (again,
not researched) that possibly more serializable exceptions fell out from under
it. Particularly, I've seen, in passing, some Item.java not serializable
exceptions.
Richard Rodgers and I have discussed this only briefly, but if you look into
this deeper, our concerns were that there were possibly references to classes
in DSpaceFeedGenerator that should not be held onto and should not be cached.
Sorry for the sparse nature of the reply, but in my experience, every little
bit of information helps. I'll let you know if I see any other evidence of
this.
Cheers,
--
sands fish
Senior Software Engineer
MIT Libraries
Technology Research & Development
[email protected]<mailto:[email protected]>
E25-131
On Feb 2, 2011, at 5:14 PM, Peter Dietz (DuraSpace JIRA) wrote:
[
https://jira.duraspace.org/browse/DS-296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18828#action_18828
]
Peter Dietz commented on DS-296:
--------------------------------
We just switched our production instance to XMLUI, and we're seeing this error
frequently.
Anyone with experience with cocoon serialization / DSpaceFeedGenerator care to
weigh in?
I may consider Wendy's fix, but I'm thinking I would first want to throw lots
of log.debug()'s in the code to trace down what's going on where.
DspaceFeedGenerator not serializable?!
--------------------------------------
Key: DS-296
URL: https://jira.duraspace.org/browse/DS-296
Project: DSpace
Issue Type: Bug
Components: XMLUI
Affects Versions: 1.5.2, 1.6.0
Reporter: Flávio Botelho
For some reason, the code wants to serialize
org.dspace.app.xmlui.cocoon.DSpaceFeedGenerator, should it?
If so than it needs to implement serializable.
Else somewhere there is a pointer to such an object that shouldn't be.
tor--8594061610370491601_T-i18n-context://i18n/?pt_BR__S-xml-;encoding=UTF-8;indent=yes'.
Initial cause was org.dspace.app.xmlui.cocoon.DSpaceFeedGenerator
java.io.NotSerializableException:
org.dspace.app.xmlui.cocoon.DSpaceFeedGenerator
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at net.sf.ehcache.store.DiskStore.serializeEntry(DiskStore.java:739)
at net.sf.ehcache.store.DiskStore.writeElement(DiskStore.java:678)
at net.sf.ehcache.store.DiskStore.writeOrReplaceEntry(DiskStore.java:667)
at net.sf.ehcache.store.DiskStore.flushSpool(DiskStore.java:639)
at
net.sf.ehcache.store.DiskStore.throwableSafeFlushSpoolIfRequired(DiskStore.java:615)
at
net.sf.ehcache.store.DiskStore.spoolAndExpiryThreadMain(DiskStore.java:583)
at net.sf.ehcache.store.DiskStore.access$800(DiskStore.java:65)
at
net.sf.ehcache.store.DiskStore$SpoolAndExpiryThread.run(DiskStore.java:1057)
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