The flush of written data via TarRevisions is asynchronous in relation to FileStore.close()

21.11.2016 12:00:59.792 WARN   o.a.j.o.s.f.Scheduler: The scheduler FileStore background tasks takes too long to shutdown
21.11.2016 12:01:10.363 INFO   o.a.j.o.s.f.FileStore: TarMK closed: /data/cq/crx-quickstart/repository-segment-tar-20161121-120039/segmentstore
21.11.2016 12:01:10.625 INFO   o.a.j.o.p.s.f.FileStore: TarMK closed: /data/cq/crx-quickstart/repository/segmentstore
...
### The above directories are swapped/moved here etc ###
...
21.11.2016 12:01:10.646 WARN   o.a.j.o.s.f.FileStore: Failed to flush the TarMK at /data/cq/crx-quickstart/repository-segment-tar-20161121-120039/segmentstore
java.io.IOException: Stream Closed
    at java.io.RandomAccessFile.writeBytes(Native Method) ~[na:1.8.0_101]
    at java.io.RandomAccessFile.writeBytes(RandomAccessFile.java:1100) ~[na:1.8.0_101]
    at org.apache.jackrabbit.oak.segment.file.TarRevisions.flush(TarRevisions.java:209) 
    at org.apache.jackrabbit.oak.segment.file.FileStore.flush(FileStore.java:358) 
    at org.apache.jackrabbit.oak.segment.file.FileStore$2.run(FileStore.java:221) 
    at org.apache.jackrabbit.oak.segment.file.SafeRunnable.run(SafeRunnable.java:67) 
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_101]
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_101]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_101]
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [na:1.8.0_101]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_101]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_101]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101]