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Posted to issues@hive.apache.org by "Alexander Kolbasov (JIRA)" <ji...@apache.org> on 2017/10/07 00:16:02 UTC
[jira] [Commented] (HIVE-17735) ObjectStore.addNotificationEvent is
leaking queries
[ https://issues.apache.org/jira/browse/HIVE-17735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16195463#comment-16195463 ]
Alexander Kolbasov commented on HIVE-17735:
-------------------------------------------
There is a second leak:
{code}
private void lockForUpdate() throws MetaException {
String selectQuery = "select NEXT_EVENT_ID from NOTIFICATION_SEQUENCE";
String selectForUpdateQuery = sqlGenerator.addForUpdateClause(selectQuery);
new RetryingExecutor(hiveConf, () -> {
Query query = pm.newQuery("javax.jdo.query.SQL", selectForUpdateQuery);
query.setUnique(true);
// only need to execute it to get db Lock
query.execute();
}).run();
}
{code}
The selectQuery is never closed.
> ObjectStore.addNotificationEvent is leaking queries
> ---------------------------------------------------
>
> Key: HIVE-17735
> URL: https://issues.apache.org/jira/browse/HIVE-17735
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 3.0.0
> Reporter: Alexander Kolbasov
>
> In ObjectStore.addNotificationEvent():
> {code}
> Query objectQuery = pm.newQuery(MNotificationNextId.class);
> Collection<MNotificationNextId> ids = (Collection) objectQuery.execute();
> {code}
> The query is never closed.
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