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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4895) Thread local TableDescriptor#referencedColumnMap is not set to null when connection closes.
Date Tue, 09 Nov 2010 16:31:11 GMT
Thread local TableDescriptor#referencedColumnMap is not set to null when connection closes.
-------------------------------------------------------------------------------------------

                 Key: DERBY-4895
                 URL: https://issues.apache.org/jira/browse/DERBY-4895
             Project: Derby
          Issue Type: Bug
          Components: SQL
    Affects Versions: 10.6.2.1, 10.6.1.0, 10.5.3.0, 10.5.2.0, 10.5.1.1
            Reporter: Dag H. Wanvik
            Priority: Minor


> This has been seen to cause error messages in TomCat, cf. this quote from a mail on derby-user:
> 
> http://mail-archives.apache.org/mod_mbox/db-derby-user/201011.mbox/%3C7800E37B639BC345BC2AB40980B7C529180FB525@MERCMBX03R.na.SAS.com%3E
> 
> SEVERE: The web application [/MyApp] created a ThreadLocal with key of type [org.apache.derby.iapi.sq\
> l.dictionary.TableDescriptor$1] (value [org.apache.derby.iapi.sql.dictionary.TableDescriptor$1@d133a3])\
>  and a value of type [java.util.WeakHashMap] (value [{={1, 2, 3, 4}, =null, =null}])
but failed to remo\
> ve it when the web application was stopped. This is very likely to create a memory leak.


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