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Posted to dev@jena.apache.org by "Andy Seaborne (Created) (JIRA)" <ji...@apache.org> on 2012/01/25 11:46:41 UTC
[jira] [Created] (JENA-202) Creating datasets, then using them in a
transaction, repeatedly, can cause OOM.
Creating datasets, then using them in a transaction, repeatedly, can cause OOM.
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Key: JENA-202
URL: https://issues.apache.org/jira/browse/JENA-202
Project: Jena
Issue Type: Bug
Components: TDB
Affects Versions: TDB 0.9.0
Reporter: Andy Seaborne
Assignee: Andy Seaborne
Priority: Blocker
Fix For: TDB 0.9.0
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[jira] [Commented] (JENA-202) Creating datasets, then using them in
a transaction, repeatedly, can cause OOM.
Posted by "Andy Seaborne (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13195840#comment-13195840 ]
Andy Seaborne commented on JENA-202:
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A specific cause for this report has not been found, nor has it be reproduced outside the original report test framework. Code analysis shows a possible cause: the TDBMaker cache isn't thread safe. Used with the usual locking policy, this was acceptable so it is possible that the change to transactions also is a change in usage patterns.
It was also reported that using the alternative way to make datasets, directly using the transactional dataset factory (StoreConnection) works. There is not reason not to use the direct code so this is now the normal API code to make datasets in TDBFactory. StoreConnection has a cache and the datasets behave like old style datasets until used by for a transaction when they switch to being transactional only.
(There is no equivalent of autocommit because of the severe performance problems and the fact that SPARQL query and update are not safe if done one-trrssnaction per interaction with the storage - many interactions are involved.)
Status: awaiting feedback as to whether the changes remove the problem.
> Creating datasets, then using them in a transaction, repeatedly, can cause OOM.
> -------------------------------------------------------------------------------
>
> Key: JENA-202
> URL: https://issues.apache.org/jira/browse/JENA-202
> Project: Jena
> Issue Type: Bug
> Components: TDB
> Affects Versions: TDB 0.9.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Blocker
> Fix For: TDB 0.9.0
>
>
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[jira] [Issue Comment Edited] (JENA-202) Creating datasets, then
using them in a transaction, repeatedly, can cause OOM.
Posted by "Sam Tunnicliffe (Issue Comment Edited) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13197743#comment-13197743 ]
Sam Tunnicliffe edited comment on JENA-202 at 2/1/12 10:55 AM:
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I can confirm that the changes did fix the problems we experienced. Our application test suite, which consistently produced OOMs and test failures with the previous code is now passing without issue (as it did with earlier versions of TDB).
was (Author: beobal):
I can confirm that the changes in did fix the problems we experienced. Our application test suite, which consistently produced OOMs and test failures with the previous code is now passing without issue (as it did with earlier versions of TDB).
> Creating datasets, then using them in a transaction, repeatedly, can cause OOM.
> -------------------------------------------------------------------------------
>
> Key: JENA-202
> URL: https://issues.apache.org/jira/browse/JENA-202
> Project: Jena
> Issue Type: Bug
> Components: TDB
> Affects Versions: TDB 0.9.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Blocker
> Fix For: TDB 0.9.0
>
>
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[jira] [Resolved] (JENA-202) Creating datasets, then using them in
a transaction, repeatedly, can cause OOM.
Posted by "Andy Seaborne (Resolved) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Seaborne resolved JENA-202.
--------------------------------
Resolution: Fixed
Sam - thanks for the confirmation.
> Creating datasets, then using them in a transaction, repeatedly, can cause OOM.
> -------------------------------------------------------------------------------
>
> Key: JENA-202
> URL: https://issues.apache.org/jira/browse/JENA-202
> Project: Jena
> Issue Type: Bug
> Components: TDB
> Affects Versions: TDB 0.9.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Blocker
> Fix For: TDB 0.9.0
>
>
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[jira] [Commented] (JENA-202) Creating datasets, then using them in
a transaction, repeatedly, can cause OOM.
Posted by "Sam Tunnicliffe (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13197743#comment-13197743 ]
Sam Tunnicliffe commented on JENA-202:
--------------------------------------
I can confirm that the changes in did fix the problems we experienced. Our application test suite, which consistently produced OOMs and test failures with the previous code is now passing without issue (as it did with earlier versions of TDB).
> Creating datasets, then using them in a transaction, repeatedly, can cause OOM.
> -------------------------------------------------------------------------------
>
> Key: JENA-202
> URL: https://issues.apache.org/jira/browse/JENA-202
> Project: Jena
> Issue Type: Bug
> Components: TDB
> Affects Versions: TDB 0.9.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Blocker
> Fix For: TDB 0.9.0
>
>
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[jira] [Closed] (JENA-202) Creating datasets, then using them in a
transaction, repeatedly, can cause OOM.
Posted by "Andy Seaborne (Closed) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Seaborne closed JENA-202.
------------------------------
> Creating datasets, then using them in a transaction, repeatedly, can cause OOM.
> -------------------------------------------------------------------------------
>
> Key: JENA-202
> URL: https://issues.apache.org/jira/browse/JENA-202
> Project: Jena
> Issue Type: Bug
> Components: TDB
> Affects Versions: TDB 0.9.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Blocker
> Fix For: TDB 0.9.0
>
>
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