java.util.NoSuchElementException: Timeout waiting for idle objec
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Key: DS-320
URL: http://jira.dspace.org/jira/browse/DS-320
Project: DSpace 1.x
Issue Type: Bug
Components: XMLUI
Affects Versions: 1.5.2
Reporter: Flávio Botelho
Priority: Blocker
We have been restarting Tomcat daily now, sometimes multiple times a day, the
connections are running out.
From a heap dump its clear that there is a lot of Context objects not being
released, actually being hold onto by Finalizer.
When applied Mark Woods patch:
http://jira.dspace.org/jira/browse/DS-253
That seemed to make it longer for the problems to appear, but still they end up
happening. (Nevertheless the patch brings other concurrent critical problem
from cocoon, that we never actually spotted in production).
There are some Exceptions appearing before the one about no connections left,
but the most common one is:
Caused by: org.postgresql.util.PSQLException: This statement has been closed.
at
org.postgresql.jdbc2.AbstractJdbc2Statement.checkClosed(AbstractJdbc2Statement.java:2444)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.setInt(AbstractJdbc2Statement.java:1150)
at
org.apache.commons.dbcp.DelegatingPreparedStatement.setInt(DelegatingPreparedStatement.java:117)
at
org.apache.commons.dbcp.DelegatingPreparedStatement.setInt(DelegatingPreparedStatement.java:117)
at
org.dspace.storage.rdbms.DatabaseManager.loadParameters(DatabaseManager.java:1676)
at
org.dspace.storage.rdbms.DatabaseManager.query(DatabaseManager.java:219)
at
org.dspace.storage.rdbms.DatabaseManager.querySingle(DatabaseManager.java:302)
But i don't know why this is happening? Any clues?
Anyways, maybe there is some problem with the top-level Exception handling in
XMLUI that is ending up making Contexts getting 'leaked'?
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