[teiid-issues] [JBoss JIRA] (TEIID-2626) If a column type is not set, null values will be written into persisted batches
Steven Hawkins (JIRA)
jira-events at lists.jboss.org
Thu Aug 15 10:40:26 EDT 2013
Steven Hawkins created TEIID-2626:
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Summary: 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
Fix For: 8.4.1, 8.5
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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