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From "Noble Paul (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-914) Presence of finalize() in the codebase
Date Wed, 01 Jul 2009 05:28:47 GMT

    [ https://issues.apache.org/jira/browse/SOLR-914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12725930#action_12725930
] 

Noble Paul commented on SOLR-914:
---------------------------------

bq.Logging a warning seems like the right way to go to me

so do you mean , logging a warning and do not do cleanup. or log a warning and do the cleanup
?

I would prefer the latter because the system will continue to work 

> Presence of finalize() in the codebase 
> ---------------------------------------
>
>                 Key: SOLR-914
>                 URL: https://issues.apache.org/jira/browse/SOLR-914
>             Project: Solr
>          Issue Type: Improvement
>          Components: clients - java
>    Affects Versions: 1.3
>         Environment: Tomcat 6, JRE 6
>            Reporter: Kay Kay
>            Priority: Minor
>             Fix For: 1.4
>
>   Original Estimate: 480h
>  Remaining Estimate: 480h
>
> There seems to be a number of classes - that implement finalize() method.  Given that
it is perfectly ok for a Java VM to not to call it - may be - there has to some other way
 { try .. finally - when they are created to destroy them } to destroy them and the presence
of finalize() method , ( depending on implementation ) might not serve what we want and in
some cases can end up delaying the gc process, depending on the algorithms. 
> $ find . -name *.java | xargs grep finalize
> ./contrib/dataimporthandler/src/main/java/org/apache/solr/handler/dataimport/JdbcDataSource.java:
 protected void finalize() {
> ./src/java/org/apache/solr/update/SolrIndexWriter.java:  protected void finalize() {
> ./src/java/org/apache/solr/core/CoreContainer.java:  protected void finalize() {
> ./src/java/org/apache/solr/core/SolrCore.java:  protected void finalize() {
> ./src/common/org/apache/solr/common/util/ConcurrentLRUCache.java:  protected void finalize()
throws Throwable {
> May be we need to revisit these occurences from a design perspective to see if they are
necessary / if there is an alternate way of managing guaranteed destruction of resources.


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