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https://issues.apache.org/jira/browse/BOOKKEEPER-67?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthieu Morel updated BOOKKEEPER-67:
-------------------------------------
Attachment: ShowFileDescriptorsInfo.java
program that displays file descriptor info as seen by the vm
> BookieReadWriteTest gets blocked and never finishes
> ---------------------------------------------------
>
> Key: BOOKKEEPER-67
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-67
> Project: Bookkeeper
> Issue Type: Bug
> Environment: RHEL4.8 and Debian 6
> Reporter: Matthieu Morel
> Attachments: BookieReadWriteTest-RHEL4.8.log,
> ShowFileDescriptorsInfo.java
>
>
> I systematically reproduce this behaviour on the linux boxes I tested with.
> The test gets stuck acquiring permits from a semaphore, normally used for
> throttling:
> "main" prio=10 tid=0x08058c00 nid=0x588d waiting on condition [0xf723c000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0xb5619728> (a
> java.util.concurrent.Semaphore$NonfairSync)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:969)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1281)
> at java.util.concurrent.Semaphore.acquire(Semaphore.java:286)
> at
> org.apache.bookkeeper.client.LedgerHandle.asyncAddEntry(LedgerHandle.java:394)
> at
> org.apache.bookkeeper.client.LedgerHandle.asyncAddEntry(LedgerHandle.java:366)
> at
> org.apache.bookkeeper.test.BookieReadWriteTest.testShutdown(BookieReadWriteTest.java:815)
> The issue might come from the synchronization mechanism used in the test
> itself.
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