Re-compilation may cause duplicate entries in the XPLAIN table
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Key: DERBY-4849
URL: https://issues.apache.org/jira/browse/DERBY-4849
Project: Derby
Issue Type: Bug
Components: SQL
Affects Versions: 10.6.2.1, 10.7.0.0
Reporter: Kristian Waagan
Priority: Minor
If happening at the right moment, a re-compilation request may cause duplicate
entries in the XPLAIN statement tables.
I have only confirmed this for the SYSXPLAIN_STATEMENTS table, and I do not
know if the other XPLAIN tables are affected.
The error is highly intermittent, and so far I have only been able to trigger
it when testing the automatic index statistics update prototype.
See the attached stack-trace for some more details.
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