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https://issues.jboss.org/browse/ISPN-1822?page=com.atlassian.jira.plugin....
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Martin Gencur commented on ISPN-1822:
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Manik, it seems like on Oracle JDK when I set maxEntries to 2, it is really 2. However on
IBM JDK when I set maxEntries to 2, it actually ends up with 4 (the least power of two
larger than selected value - as described in docs -
http://docs.jboss.org/infinispan/5.1/apidocs/org/infinispan/config/Config...).
Is this difference in behavior expected?
Cache entry not evicted from memory on IBM JDK when another entry was
loaded from a cache loader and maxEntries had been reached
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Key: ISPN-1822
URL:
https://issues.jboss.org/browse/ISPN-1822
Project: Infinispan
Issue Type: Bug
Components: Eviction
Affects Versions: 5.1.0.FINAL
Environment: java version "1.6.0"
Java(TM) SE Runtime Environment (build pxi3260sr9fp1-20110208_03(SR9 FP1))
IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux x86-32 jvmxi3260sr9-20110203_74623 (JIT
enabled, AOT enabled) ;
java version "1.7.0"
Java(TM) SE Runtime Environment (build pxi3270-20110827_01)
IBM J9 VM (build 2.6, JRE 1.7.0 Linux x86-32 20110810_88604 (JIT enabled, AOT enabled)
Reporter: Martin Gencur
Assignee: Manik Surtani
This behavior is specific to IBM JDK (I tried JDK6 and 7), it works fine with Java
HotSpot.
Steps to reproduce the problem:
1) set maxEntries for eviction to 2 and algorithm e.g. to LRU
2) store 3 entries key1, key2, key3 to the cache (after that you can see that the cache
contains only 2 entries - key2 and key3, the first one was evicted from memory)
3) call cache.get("key1")
4) PROBLEM - cache contains all key1, key2, key3 even though it should contain only 2
entries - only happens with IBM JDK (6 or 7 ..no matter)
I'll shortly issue a pull request with a test to ispn-core
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