[infinispan-issues] [JBoss JIRA] (ISPN-2874) Index File handles leak

[Sanne Grinovero (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-2874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12757827#comment-12757827 ] 

Sanne Grinovero commented on ISPN-2874:
---------------------------------------

The problem is that the default fetch mode for results implementing the java.lang.Iterable was changed to LAZY fetch mode.

This mode isn't exactly Iterable but its extension org.infinispan.query.ResultIterator : the main but very important difference is that such an Iterator has a close() method which needs to be invoked to avoid such resource leaks.

Bottomline, having the default as LAZY isn't suited for usage in "enhanced for loops" as the API user doesn't realize the mistake - and has no option to fix it anyway.

Workaround: avoid enhanced for loops to iterate on the resultsets.
                
> Index File handles leak
> -----------------------
>
>                 Key: ISPN-2874
>                 URL: https://issues.jboss.org/browse/ISPN-2874
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Querying
>    Affects Versions: 5.2.0.Final, 5.2.1.Final, 5.2.2.Final
>            Reporter: Sanne Grinovero
>            Assignee: Sanne Grinovero
>            Priority: Critical
>             Fix For: 5.2.3.Final, 5.3.0.Alpha1
>
>
> This forum post seems reliable and needs urgent investigation:
> https://community.jboss.org/thread/221319
> Seems that Infinispan Query is leaking references to open index readers.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira