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https://issues.apache.org/jira/browse/SLING-3432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14502594#comment-14502594
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Timothee Maret edited comment on SLING-3432 at 4/20/15 10:06 AM:
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[~egli] is it correct to summarise that "changed" events can still be sent in
isolated mode but consumers need to enforce the check for isCurrent flag (as
described by api) ?
was (Author: marett):
[~egli] is it correct to summarise that "changed" events can still be sent in
isolated mode but consumers need to take care of is to enforce the check for
isCurrent flag (as it ever was) ?
> pseudo network partition causes job deserialization issue in a cluster (when
> reading while job is being reassigned)
> -------------------------------------------------------------------------------------------------------------------
>
> Key: SLING-3432
> URL: https://issues.apache.org/jira/browse/SLING-3432
> Project: Sling
> Issue Type: Bug
> Components: Extensions
> Affects Versions: Discovery Impl 1.0.2
> Reporter: Stefan Egli
> Assignee: Stefan Egli
> Fix For: Discovery Impl 1.1.2
>
>
> There is a race condition between two instances in a cluster (eg oak or crx):
> Instance 1 is writing a job with a binary property, instance 2 is reading the
> job (likely triggered by discovery sending it a topologychangedevent). It
> looks like instance 2 is reading the job just about while instance 1 is still
> in the process or completely writing the job, or at least the binary.
> Resulting in the following exception:
> 04.03.2014 06:55:39.667 *WARN* [Apache Sling Job Background Loader]
> org.apache.sling.event.impl.jobs.JobManagerImpl Unable to read job from
> /var/eventing/jobs/assigned/e4337f8f-47d2-41df-b3ab-0d40b1b2acd4/slingevent:eventadmin/2014/3/3/8/45/cq.wcm.msm.job.pageEvent_9718d7db-85b4-4930-a2ba-11a80d772970_172
> java.lang.Exception: Unable to deserialize property 'pageEvent'
> at
> org.apache.sling.event.impl.support.ResourceHelper.cloneValueMap(ResourceHelper.java:213)
> at
> org.apache.sling.event.impl.jobs.JobManagerImpl.readJob(JobManagerImpl.java:538)
> at
> org.apache.sling.event.impl.jobs.BackgroundLoader.loadJobInTheBackground(BackgroundLoader.java:318)
> at
> org.apache.sling.event.impl.jobs.BackgroundLoader.loadJobsInTheBackground(BackgroundLoader.java:294)
> at
> org.apache.sling.event.impl.jobs.BackgroundLoader.run(BackgroundLoader.java:203)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.io.EOFException: null
> at
> java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2280)
> at
> java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2749)
> at
> java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:779)
> at java.io.ObjectInputStream.<init>(ObjectInputStream.java:279)
> at
> org.apache.sling.event.impl.support.ResourceHelper.cloneValueMap(ResourceHelper.java:208)
> ... 5 common frames omitted
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