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https://issues.apache.org/jira/browse/DERBY-6533?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Hillegas updated DERBY-6533:
---------------------------------
Attachment: derby-6533-04-outOfMemory.diff
Attaching derby-6533-04-outOfMemory.diff. This patch adds some additional
defenses against OutOfMemoryErrors in NsTest:
1) Now the test records the last measurements taken by the memory checker
thread. The last memory measurements are reported when the test prints out its
statistics at the end.
2) When recording an exception, the test now checks whether the exception was
(or was caused by) an OutOfMemoryError. If so, the statistics are printed and
the program ends.
Knut thinks that the OutOfMemoryError I saw in the last run was caused by a bug
in JVM 8: https://bugs.openjdk.java.net/browse/JDK-8034852 . The workaround is
to run the test with this setting:
-XX:MaxMetaspaceFreeRatio=100
Touches the following files:
M java/testing/org/apache/derbyTesting/system/nstest/utils/MemCheck.java
M java/testing/org/apache/derbyTesting/system/nstest/NsTest.java
> Add a quiet mode to NsTest
> --------------------------
>
> Key: DERBY-6533
> URL: https://issues.apache.org/jira/browse/DERBY-6533
> Project: Derby
> Issue Type: Improvement
> Components: Test
> Affects Versions: 10.11.0.0
> Reporter: Rick Hillegas
> Assignee: Rick Hillegas
> Attachments: derby-6533-01-aa-quietMode.diff,
> derby-6533-02-aa-sequencesAndMoreStats.diff,
> derby-6533-02-aa-sequencesAndMoreStats.out, derby-6533-03-timerThread.diff,
> derby-6533-04-outOfMemory.diff
>
>
> Right now NsTest produces an enormous log file. This may be useful for
> tracking down some errors. However, this can also make it hard to find the
> signal in the noise. It would be good to turn off the chatty diagnostics
> which report the result of every insert, update, delete, and select. A
> summary at the end may be good enough, including a summary of the number of
> times each kind of error (SQLState) was seen. While I'm in there, I plan to
> make other smallish changes.
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