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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Updated] (OAK-6884) TarMK disk space check is not synchronized with FileStore opened state
Date Wed, 06 Dec 2017 16:39:00 GMT

     [ https://issues.apache.org/jira/browse/OAK-6884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Dürig updated OAK-6884:
-------------------------------
    Fix Version/s: 1.7.13

> TarMK disk space check is not synchronized with FileStore opened state
> ----------------------------------------------------------------------
>
>                 Key: OAK-6884
>                 URL: https://issues.apache.org/jira/browse/OAK-6884
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: segment-tar, upgrade
>    Affects Versions: 1.7.9
>            Reporter: Arek Kita
>            Assignee: Michael Dürig
>            Priority: Minor
>              Labels: concurrency, production
>             Fix For: 1.8, 1.7.13
>
>
> It seems that the disk space check is not properly synchronized with {{FileStore}} as
I revealed a race condition while using oak-upgrade during migration to {{segment-tar}}.
> The {{FileStore}} instance is closed while TarMK disk check tries to execute and it seems
it is dependent on the state of segment ({{org.apache.jackrabbit.oak.segment.file.FileStore.checkDiskSpace(FileStore.java:541)}}
that needs to be opened. 
> {noformat}
> 30.10.2017 11:26:05.834 WARN   o.a.j.o.s.f.Scheduler: The scheduler FileStore background
tasks takes too long to shut down
> 30.10.2017 11:26:11.674 INFO   o.a.j.o.s.f.FileStore: TarMK closed: /data/cq/crx-quickstart/repository-segment-tar-20171030-112401/segmentstore
> 30.10.2017 11:26:11.676 ERROR  o.a.j.o.s.f.SafeRunnable: Uncaught exception in TarMK
disk space check [/data/cq/crx-quickstart/repository-segment-tar-20171030-112401/segmentstore]
> java.lang.IllegalStateException: already shut down
>     at org.apache.jackrabbit.oak.segment.file.ShutDown.keepAlive(ShutDown.java:42)
>     at org.apache.jackrabbit.oak.segment.file.FileStore.size(FileStore.java:302)
>     at org.apache.jackrabbit.oak.segment.file.FileStore.checkDiskSpace(FileStore.java:541)
>     at org.apache.jackrabbit.oak.segment.file.FileStore.access$300(FileStore.java:102)
>     at org.apache.jackrabbit.oak.segment.file.FileStore$3.run(FileStore.java:237)
>     at org.apache.jackrabbit.oak.segment.file.SafeRunnable.run(SafeRunnable.java:67)
>     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>     at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
>     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
>     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
>     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>     at java.lang.Thread.run(Thread.java:745)
> {noformat}



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