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Posted to issues@hive.apache.org by "shezm (Jira)" <ji...@apache.org> on 2021/08/03 05:33:00 UTC
[jira] [Assigned] (HIVE-25416) Hive metastore leak memory cause
datanucleus-api-jdo bug
[ https://issues.apache.org/jira/browse/HIVE-25416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
shezm reassigned HIVE-25416:
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> Hive metastore leak memory cause datanucleus-api-jdo bug
> --------------------------------------------------------
>
> Key: HIVE-25416
> URL: https://issues.apache.org/jira/browse/HIVE-25416
> Project: Hive
> Issue Type: Bug
> Environment:
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> Reporter: shezm
> Assignee: shezm
> Priority: Major
> Attachments: leak.jpg
>
>
> I encountered a memory leak case. The MAT info :
> !leak.jpg!
> Full error message is :
> {code:java}
> Cannot get Long result for param = 8 for column "`FUNCS`.`FUNC_ID`" : Operation not allowed after ResultSet closed{code}
> This is because there is a bug in the JDOPersistenceManager.retrieveAll code.
> {code:java}
> // code placeholder
> JDOPersistenceManager{
> public void retrieveAll(Collection pcs, boolean useFetchPlan) {
> this.assertIsOpen();
> ArrayList failures = new ArrayList();
> Iterator i = pcs.iterator();
> while(i.hasNext()) {
> try {
> this.jdoRetrieve(i.next(), useFetchPlan);
> } catch (RuntimeException var6) {
> failures.add(var6);
> }
> }
> if (!failures.isEmpty()) {
> throw new JDOUserException(Localiser.msg("010038"), (Exception[])((Exception[])failures.toArray(new Exception[failures.size()])));
> }
> }
> }
> {code}
> In some extreme cases the function of next() does not work . This will result in a very large list like as shown above.
>
> The bug detail can see this : [https://github.com/datanucleus/datanucleus-api-jdo/issues/106]
> This problem is fixed in datanucleus-api-jdo version 5.2.6. So we should upgrade it .
>
>
>
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