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https://issues.apache.org/jira/browse/JCR-3805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14100654#comment-14100654
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Shashank Gupta edited comment on JCR-3805 at 8/18/14 2:19 PM:
--------------------------------------------------------------
The is concurrent store and init operation breaking the transitive relation
{noformat} A<B, B< C => A<C {noformat}. The issue is [changed sorting algo in
jdk
7|http://stackoverflow.com/questions/11441666/java-error-comparison-method-violates-its-general-contract]
which raises expecption to unsatishfied transitive relation.
The workaround {{System.setProperty("java.util.Arrays.useLegacyMergeSort",
"true");}} reverts to JDK 6 algorithm and thus resolves the issue.
was (Author: shgupta):
the issue is [changed sorting algo in jdk
7|http://stackoverflow.com/questions/11441666/java-error-comparison-method-violates-its-general-contract].
The is concurrent store and init operation breaking the transitive relation
{noformat} A<B, B< C => A<C {noformat}
The workaround {{System.setProperty("java.util.Arrays.useLegacyMergeSort",
"true");}} resolves the issue.
> LocalCache doesn't build up properly in JDK 7.
> -----------------------------------------------
>
> Key: JCR-3805
> URL: https://issues.apache.org/jira/browse/JCR-3805
> Project: Jackrabbit Content Repository
> Issue Type: Bug
> Affects Versions: 2.8
> Reporter: Shashank Gupta
> Fix For: 2.8.1
>
> Attachments: JCR-3803-3805.patch, JCR-3805-TestCase.patch
>
>
> In JDK 7 local cache build up shows following exception. This exception leads
> to local cache not initializing properly and local cache exceeds its
> configured size and eventauly exhausting disk.
> {noformat}
> 17.08.2014 05:37:08.500 *INFO* [Apache Sling Job Background Loader]
> org.apache.sling.event Service [QueueMBean for queue Granite Workflow
> Queue,2420] ServiceEvent REGISTERED
> 17.08.2014 05:37:08.502 *INFO* [Apache Sling Job Queue Granite Workflow
> Queue]
> org.apache.sling.event.impl.jobs.queues.TopicRoundRobinJobQueue.Granite
> Workflow Queue Starting job queue Granite Workflow Queue
> 17.08.2014 05:37:10.329 *ERROR* [Thread-56]
> org.apache.sling.extensions.threaddump.internal.Activator Uncaught exception
> in Thread Thread[Thread-56,5,main]
> java.lang.IllegalArgumentException: Comparison method violates its general
> contract!
> at java.util.TimSort.mergeLo(TimSort.java:747)
> at java.util.TimSort.mergeAt(TimSort.java:483)
> at java.util.TimSort.mergeCollapse(TimSort.java:410)
> at java.util.TimSort.sort(TimSort.java:214)
> at java.util.TimSort.sort(TimSort.java:173)
> at java.util.Arrays.sort(Arrays.java:659)
> at java.util.Collections.sort(Collections.java:217)
> at
> org.apache.jackrabbit.core.data.LocalCache$CacheBuildJob.run(LocalCache.java:559)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
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