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https://issues.apache.org/jira/browse/RIVER-391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12994146#comment-12994146
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Patricia Shanahan commented on RIVER-391:
-----------------------------------------
The original failure was a timeout in the QA test process because of not
finding expected JavaSpace entries.
During debug of that, an earlier version of the attached FastListTest.java
demonstrated two forms of failure:
1. Missing entries.
2. NullPointerException in the FastList head method.
The first of these two failures is the dominant failure form for the attached
FastListTest.
Both failures could be caused by linkage errors in the FastList linked list.
After some attempt at debug, a new version of FastList that appears more robust
was written using JDK 5 features.
However, that did not fix all cases of QA test failure, and an additional bug
was found. The constructors for some non-final test classes attempt to protect
a static sequence number generator by synchronizing on the Class object for the
object under construction. That is ineffective, because the object under
construction may belong to a subclass with its own Class object.
Fixing that bug resolved the original QA test failures, but was not relevant to
the FastListTest failures.
> Outrigger failure under stress
> ------------------------------
>
> Key: RIVER-391
> URL: https://issues.apache.org/jira/browse/RIVER-391
> Project: River
> Issue Type: Bug
> Components: com_sun_jini_outrigger
> Affects Versions: River_2.1.2
> Reporter: Patricia Shanahan
> Fix For: River_2.1.3
>
> Attachments: FastListTest.java
>
>
> Hudson produced a single QA failure running
> com/sun/jini/test/impl/outrigger/matching/StressTestWithShutdown.td. The
> frequency can be increased by increasing the degree of stress, by adding more
> readers, writers, and entries:
> com.sun.jini.test.share.restart_wait=10000
> -com.sun.jini.test.impl.outrigger.matching.StressTest.num_entries=1000
> -com.sun.jini.test.impl.outrigger.matching.StressTest.num_readers=13
> -com.sun.jini.test.impl.outrigger.matching.StressTest.num_writers=7
> +com.sun.jini.test.impl.outrigger.matching.StressTest.num_entries=10000
> +com.sun.jini.test.impl.outrigger.matching.StressTest.num_readers=500
> +com.sun.jini.test.impl.outrigger.matching.StressTest.num_writers=500
> com.sun.jini.test.impl.outrigger.matching.tryShutdown=1
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