What's the full stack trace?
(What's the blocking thread?)
Yes, another unended W transaction in the same process might be the cause.
Andy
On 25/03/2020 11:08, Jean-Marc Vanel wrote:
I investigated on that.
Now my test suite passes without Jena TDB trouble. I just added this in
Scala SBT :
parallelExecution in Test := false
I didn't know that parallel execution was the default.
So apparently this was an issue with 2 processes accessing the same TDB .
Normally this is detected and an explicit Jena TDB message appears, but not
this time.
Jean-Marc Vanel
<http://semantic-forms.cc:9112/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me>
+33 (0)6 89 16 29 52
Twitter: @jmvanel , @jmvanel_fr ; chat: irc://irc.freenode.net#eulergui
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Le mar. 24 mars 2020 à 18:56, Jean-Marc Vanel <jeanmarc.va...@gmail.com> a
écrit :
Hi Jena users!
After changing my test suite in* semantic_forms
<http://semantic-forms.cc:9112/ldp/semantic_forms>* , I get
consistently a thread blocked forever. I upgraded to latest Jena Version =
"3.14.0" , and happily my Web application seems to be working fine on my
laptop, and the test suite sort of works, that is running tests one by one.
In my test suite I used to recursively delete the TDB directories after
each test. What changed is that instead I kept the same TDB directories for
each test, calling close() after each test.
This is with TDB 1. Is another unended transaction the issue? Then how to
discover that ?
Thread [pool-1-thread-1-ScalaTest-running-TestRDFCache] (Suspended)
Unsafe.park(boolean, long) line: not available [native method]
LockSupport.park(Object) line: 175
Semaphore$FairSync(AbstractQueuedSynchronizer).parkAndCheckInterrupt()
line: 836
Semaphore$FairSync(AbstractQueuedSynchronizer).doAcquireSharedInterruptibly(int)
line: 997
Semaphore$FairSync(AbstractQueuedSynchronizer).acquireSharedInterruptibly(int)
line: 1304
Semaphore.acquire() line: 312
* TransactionManager.acquireWriterLock(boolean) line: 616 *
TransactionManager.beginInternal(TxnType, TxnType, String) line: 358
TransactionManager.begin(TxnType, String) line: 343
StoreConnection.begin(TxnType, String) line: 128
StoreConnection.begin(TxnType) line: 108
DatasetGraphTransaction.begin(TxnType) line: 169
DatasetGraphTransaction.begin(ReadWrite) line: 162
DatasetImpl.begin(ReadWrite) line: 122
JenaDatasetStore.$anonfun$rw$1(Dataset, Function0) line: 23
Jean-Marc Vanel
<http://semantic-forms.cc:9112/display?displayuri=http://jmvanel.free.fr/jmv.rdf%23me>
+33 (0)6 89 16 29 52
Twitter: @jmvanel , @jmvanel_fr ; chat: irc://irc.freenode.net#eulergui
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