[teiid-issues] [JBoss JIRA] (TEIID-2626) If a column type is not set, null values will be written into persisted batches
Johnathon Lee (JIRA)
jira-events at lists.jboss.org
Wed Oct 30 10:51:02 EDT 2013
[ https://issues.jboss.org/browse/TEIID-2626?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Johnathon Lee updated TEIID-2626:
---------------------------------
Fix Version/s: 7.7.9
> If a column type is not set, null values will be written into persisted batches
> -------------------------------------------------------------------------------
>
> Key: TEIID-2626
> URL: https://issues.jboss.org/browse/TEIID-2626
> Project: Teiid
> Issue Type: Bug
> Components: Query Engine
> Affects Versions: 7.5
> Reporter: Steven Hawkins
> Assignee: Steven Hawkins
> Priority: Blocker
> Fix For: 8.4.1, 8.5, 7.7.9
>
>
> The buffer manager will choose the null serializer if a column type is not set. This is not expected to happen, but test code can be sloppy which isn't evident if the weak reference cache is working effectively.
> However there is one place in the code that is effected, which is the internally generated partitionId column on any window function expression with a non-empty over clause. This means that on systems with limited memory and or poor performing weak references no results for the window function may be returned.
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