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https://issues.apache.org/jira/browse/OAK-9573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amrit Verma resolved OAK-9573.
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Fix Version/s: 1.42.0
Resolution: Fixed
> Make TraverseWithSort strategy the default while indexing
> ---------------------------------------------------------
>
> Key: OAK-9573
> URL: https://issues.apache.org/jira/browse/OAK-9573
> Project: Jackrabbit Oak
> Issue Type: Task
> Components: indexing
> Reporter: Amrit Verma
> Assignee: Amrit Verma
> Priority: Major
> Fix For: 1.42.0
>
>
> With the multithreaded strategy we have seen some issues in synchronization.
> Eg with thread size 4 -
> All 4 running tasks got the MemoryManager's signal, which is indicated by the
> log lines -
> {code:java}
> 13:54:28.397 [Service Thread] INFO o.a.j.o.i.i.d.f.TraverseAndSortTask -
> TAST-NSET19 Setting dumpData to true
> 13:54:28.398 [Service Thread] INFO o.a.j.o.i.i.d.f.TraverseAndSortTask -
> TAST-NSET2 Setting dumpData to true
> 13:54:28.398 [Service Thread] INFO o.a.j.o.i.i.d.f.TraverseAndSortTask -
> TAST-NSET10 Setting dumpData to true
> 13:54:28.398 [Service Thread] INFO o.a.j.o.i.i.d.f.TraverseAndSortTask -
> TAST-NSET1 Setting dumpData to true
> {code}
> However only three of them actually proceeded with dumping the data and
> notifying the MemoryManager, which is indicated by the log lines -
> {code:java}
> 13:54:33.667 [pool-3-thread-2] INFO o.a.j.o.i.i.d.f.TraverseAndSortTask -
> TAST-NSET2 Finished saving data to disk. Notifying memory listener.
> 13:54:34.588 [pool-3-thread-4] INFO o.a.j.o.i.i.d.f.TraverseAndSortTask -
> TAST-NSET19 Finished saving data to disk. Notifying memory listener.
> 13:54:35.438 [pool-3-thread-3] INFO o.a.j.o.i.i.d.f.TraverseAndSortTask -
> TAST-NSET10 Finished saving data to disk. Notifying memory listener.{code}
> After this newer tasks weren't able to register and process stuck in some
> cases.
> So we need to make traverse with sort the default strategy for now.
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