ReentrantLock is missing wake signals resulting in a deadlock
We are hitting an issue with ReentrantLock where it is missing the awake signal resulting in a deadlock. Here is the thread dump for the same. As you can see, Thread-55 is blocked on acquiring the lock, which is not locked by any other thread. This issue is very similar to
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6822370 which happens in Sunspot JVM.
"Thread-55" id=143 idx=0x2a4 tid=9388 prio=5 alive, parked, native_blocked
-- Parking to wait for: java/util/concurrent/locks/ReentrantLock$NonfairSync@0x00000001A21AC9A8
at jrockit/vm/Locks.park0(J)V(Native Method)
at jrockit/vm/Locks.park(Locks.java:2230)[inlined]
at jrockit/proxy/sun/misc/Unsafe.park(Unsafe.java:616)[inlined]
at java/util/concurrent/locks/LockSupport.park(LockSupport.java:156)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer.doAcquireInterruptibly(AbstractQueuedSynchronizer.java:867)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer.acquireInterruptibly(AbstractQueuedSynchronizer.java:1201)[inlined]
at java/util/concurrent/locks/ReentrantLock.lockInterruptibly(ReentrantLock.java:312)[inlined]
at java/util/concurrent/LinkedBlockingQueue.take(LinkedBlockingQueue.java:396)[optimized]
at java/util/concurrent/ExecutorCompletionService.take(ExecutorCompletionService.java:164)[inlined]
at com/teneo/esa/common/textengine/expander/StemIndexManager.isStemPresent(StemIndexManager.java:1345)[optimized]
at com/teneo/esa/common/textengine/expander/StemIndexManager.buildStemIndex(StemIndexManager.java:425)[optimized]
at com/teneo/esa/common/textengine/expander/StemIndexManager.buildStemIndex(StemIndexManager.java:825)
at com/teneo/esa/analytics/stemindex/StemIndexAnalyticsImpl.process(StemIndexAnalyticsImpl.java:155)
at com/teneo/esa/analytics/stemindex/StemIndexAnalyticsService$1.run(StemIndexAnalyticsService.java:128)
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
-- end of trace
"pool-7-thread-1" id=170 idx=0x310 tid=5524 prio=5 alive, parked, native_blocked
-- Parking to wait for: java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject@0x00000001D2094E90
at jrockit/vm/Locks.park0(J)V(Native Method)
at jrockit/vm/Locks.park(Locks.java:2230)[inlined]
at jrockit/proxy/sun/misc/Unsafe.park(Unsafe.java:616)[inlined]
at java/util/concurrent/locks/LockSupport.park(LockSupport.java:156)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)[optimized]
at java/util/concurrent/LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)[optimized]
at java/util/concurrent/ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)[optimized]
at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java/lang/Thread.run(Thread.java:662)
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
-- end of trace
"pool-7-thread-2" id=171 idx=0x314 tid=15588 prio=
2012-10-04 13:18:37,908 INFO [STDOUT] (RMI TCP Connection(1465)-10.65.59.167:) 5 alive, parked, native_blocked
-- Parking to wait for: java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject@0x00000001D2094E90
at jrockit/vm/Locks.park0(J)V(Native Method)
at jrockit/vm/Locks.park(Locks.java:2230)[inlined]
at jrockit/proxy/sun/misc/Unsafe.park(Unsafe.java:616)[inlined]
at java/util/concurrent/locks/LockSupport.park(LockSupport.java:156)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)[optimized]
at java/util/concurrent/LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)[optimized]
at java/util/concurrent/ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)[optimized]
at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java/lang/Thread.run(Thread.java:662)
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
-- end of trace
"pool-7-thread-3" id=172 idx=0x318 tid=6056 prio=5 alive, parked, native_blocked
-- Parking to wait for: java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject@0x00000001D2094E90
at jrockit/vm/Locks.park0(J)V(Native Method)
at jrockit/vm/Locks.park(Locks.java:2230)[inlined]
at jrockit/proxy/sun/misc/Unsafe.park(Unsafe.java:616)[inlined]
at java/util/concurrent/locks/LockSupport.park(LockSupport.java:156)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)[optimized]
at java/util/concurrent/LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)[optimized]
at java/util/concurrent/ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)[optimized]
at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java/lang/Thread.run(Thread.java:662)
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
-- end of trace
"pool-7-thread-4" id=173 idx=0x31c tid=6312 prio=5 alive, parked, native_blocked
-- Parking to wait for: java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject@0x00000001D2094E90
at jrockit/vm/Locks.park0(J)V(Native Method)
at jrockit/vm/Locks.park(Locks.java:2230)[inlined]
at jrockit/proxy/sun/misc/Unsafe.park(Unsafe.java:616)[inlined]
at java/util/concurrent/locks/LockSupport.park(LockSupport.java:156)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)[optimized]
at java/util/concurrent/LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)[optimized]
at java/util/concurrent/ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)[optimized]
at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java/lang/Thread.run(Thread.java:662)
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
-- end of trace
"pool-7-thread-5" id=174 idx=0x320 tid=15132 prio=5 alive, parked, native_blocked
-- Parking to wait for: java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject@0x00000001D2094E90
at jrockit/vm/Locks.park0(J)V(Native Method)
at jrockit/vm/Locks.park(Locks.java:2230)[inlined]
at jrockit/proxy/sun/misc/Unsafe.park(Unsafe.java:616)[inlined]
at java/util/concurrent/locks/LockSupport.park(LockSupport.java:156)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)[optimized]
at java/util/concurrent/LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)[optimized]
at java/util/concurrent/ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)[optimized]
at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java/lang/Thread.run(Thread.java:662)
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
-- end of trace
"pool-7-thread-6" id=175 idx=0x324 tid=10636 prio=5 alive, parked, native_blocked
-- Parking to wait for: java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject@0x00000001D2094E90
at jrockit/vm/Locks.park0(J)V
2012-10-04 13:18:37,908 INFO [STDOUT] (RMI TCP Connection(1465)-10.65.59.167:) (Native Method)
at jrockit/vm/Locks.park(Locks.java:2230)[inlined]
at jrockit/proxy/sun/misc/Unsafe.park(Unsafe.java:616)[inlined]
at java/util/concurrent/locks/LockSupport.park(LockSupport.java:156)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)[optimized]
at java/util/concurrent/LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)[optimized]
at java/util/concurrent/ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)[optimized]
at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java/lang/Thread.run(Thread.java:662)
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
-- end of trace
"pool-7-thread-7" id=176 idx=0x328 tid=17820 prio=5 alive, parked, native_blocked
-- Parking to wait for: java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject@0x00000001D2094E90
at jrockit/vm/Locks.park0(J)V(Native Method)
at jrockit/vm/Locks.park(Locks.java:2230)[inlined]
at jrockit/proxy/sun/misc/Unsafe.park(Unsafe.java:616)[inlined]
at java/util/concurrent/locks/LockSupport.park(LockSupport.java:156)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)[optimized]
at java/util/concurrent/LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)[optimized]
at java/util/concurrent/ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)[optimized]
at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java/lang/Thread.run(Thread.java:662)
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
-- end of trace
"pool-7-thread-8" id=177 idx=0x32c tid=6516 prio=5 alive, parked, native_blocked
-- Parking to wait for: java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject@0x00000001D2094E90
at jrockit/vm/Locks.park0(J)V(Native Method)
at jrockit/vm/Locks.park(Locks.java:2230)[inlined]
at jrockit/proxy/sun/misc/Unsafe.park(Unsafe.java:616)[inlined]
at java/util/concurrent/locks/LockSupport.park(LockSupport.java:156)[inlined]
at java/util/concurrent/locks/AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)[optimized]
at java/util/concurrent/LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)[optimized]
at java/util/concurrent/ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)[optimized]
at java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java/lang/Thread.run(Thread.java:662)
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
-- end of trace
Environment:
VM Version: Jrockit R28.2.3
JDK: 1.6.0_31
OS: Windows 2008
Let me know if you need any details.
Thanks,
Snehal
Edited by: 957943 on Oct 4, 2012 11:38 AM
Hi,
Open a ticket with support to file a BUG with JVM team.
Or try to upgrade your JVM to avoid this issue.
Regards,
Kal
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Signed messages are missing from search results in a shared mailbox
We recently completed moving all user mailboxes to Exchange 2013 from Exchange 2010. We also have a policy that disables the 'download shared mailboxes' option in Outlook as it cause .ost files to get cumbersome and cause performance problems. This
means that shared mailboxes that users have open are all in 'Online' mode. Since the move to 2013, when users search against a folder in a shared mailbox, the only items that are returned are unsigned messages. Our customer base very frequently
signs email and these signed messages do not show up in results. This was working in Exchange 2010 so our users are frustrated by the sudden inability to receive complete and accurate search results.
If they perform a search of their local mailbox, which is using Cached mode, they are searching against their local index and they can find signed messages. But since the shared mailbox is not cached to their local system, they are relying on the Exchange
server index and it does not seem to be indexing any signed messages.
Does anyone know how to force Exchange 2013 to index signed messages?try to perform the below steps and check if it works or else we need to wait till Exchange 2013 SP1 which they have planned to bring digital signature message in exchange
Outlook 2007
In Outlook 2007, follow these steps to verify that indexing is complete:
In Outlook, click Tools, Instant Search, and then click
Instant Search.
When the Microsoft Office Outlook dialog appears, you should see the following:
Outlook has finished indexing all of your items.
New items are indexed when they arrive.
0 items remaining in "Mailbox -<<var>username</var>>"
0 items remaining across all open mailboxes.
Outlook 2010 and Outlook 2013
In Outlook 2010 and Outlook 2013, follow these steps to verify that indexing is complete:
In Outlook, click in the Search box.
Click the Search tab, click Search Tools, and then click
Indexing Status.
When the Indexing Status dialog appears, you should see the following:
Outlook has finished indexing all of your items.
0 items remaining to be indexed.
Exchange Queries -
DAQ Card is inducing noise on an external clock signal resulting in false triggering
I am using an optical encoder as an external clock source for analog measurements with a PCI 6036 card. The optical encoder signal is "filtered" using a Schmitt Trigger circuit and proper shielding practices are used on the encoder cable. I am using a recent version of Labview.
When the TTL square wave signal from the encoder is viewed on an oscilliscope (without the DAQ attached) it is a picture perfect square wave, nothing that would cause any problems.
When I then connect the encoder output to my PFI line (with or without the oscilliscope) I get false triggering due to intermittent (seemingly random...) high frequency noise "blips". Out of 360 expected samples, I will typically get between 2 and 6 "bonus" samples... When captured on a scope, the noise looks like a decaying sine wave and lasts for only a few us. the peak magnitude is tyically around 2 V or so as shown on the scope, which is apparently just enough to make my card grab a sample.
Since the noise is only present when the encoder signal is attached to the DAQ, it seems that the DAQ is somehow inducing noise into the signal.
I have been fighting this problem for a while now and tried the following:
1) I first tried the raw encoder signal, but then added the Schmitt trigger, increased the signal strength of the encoder lines by adding resistors to ground, double checked my shielding, etc...
2) I verified that my ground potential between my card and my conditioning circuit were not causing problems. The conditioning circuit and encoder is now powered of the card itself, which should resolve any possible problem with grounds.
3) Cursed at various inanimate objects (made me feel better but didn't help the situation)
4) Checked if I could set a minimum pulse width required to trigger off of an exernal scan clock (I can't with my hardware.)
5) Swapped my card with a card of a different type (problem is still there)
If anybody out there has some recomendations, I am open to anything.Hello OSU_Mech_Eng,
I'm not quite sure how the DAQ card could be inducing glitches into
your digital signal. Digital signals from mechanical devices like
quadrature encoders can often be glitchy or bouncy, but your schmitt
trigger should act as a debouncing filter to clean up that digital
signal. It sounds like you have thoroughly troubleshooted this
problem, and I would recommend moving on and trying to use a counter on
your DAQ board to generate the digital signal, rathar than using the
raw signal from your encoder/schmitt trigger.
You were correct when you stated that the best way to do this is by
configuring your counter to perform retriggerable pulse
generation. You can use the signal of from your encoder to gate
the internal clock on your DAQ card, creating a clean digital
signal. By setting the minimum pulse width of the signal, you
will be able to ignore the small glitches in your signal. Here is
a link to some Knowledgebases describing how to do this:
How Do I Remove Glitches or Add a Debounce Filter to My Digital Signal?
How Do I Define the Parameters for Pulse Generation in NI-DAQmx?
For further reference, on all of NI's new M-Series DAQ cards (PCI
625x), the PFI circuitry contains built in debouncing filters to
protect against small glitches in digital signals. If you have an
M-Series card lying around, it might be helpful to give that a try.
I hope this helps,
Travis Gorkin
Applications Engineering
National Instruments
www.ni.com/support -
The missed call signal is repeated
My iPhone is to remind every minute myself that i missed a call or sms. Is it possible?
No i dont think there is a way, i know you can make it so text message notifications can be repeated but i dont think missed call notifications can.
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why our /610 is showing up last month but hasn't come up this month? We always have it and it was working fine until this month. Could anyone give me some clue? Thank you.
Basically the ENDDA for 0209 for th employee and also, the validity of that Tax authority in the system.
Sisnce the only reason of these wagetypes related to taxes to not to show up is the date ranges.
Regards,
Amit -
Missing column in query results CF9
I've got a very simple table in mssql 2005 consisting of these columns:
id (pk int),
app_id (int),
name (varchar50),
dir_key (varchar50),
path (varchar100),
size_limit (smallint),
ext_limit (varchar50),
virtual_dir (varchar50)
My query, run via cfquery or as a query object in script:
SELECT * FROM dbo.tblAppUploadSettings WHERE app_id = 1
Now, when that query runs, column virtual_dir is missing in the result set. It is present when running the same query via sql management studio.
If I explicitly add virtual_dir to the select list ( *,virtual_dir ) then I get the column returned twice.
I've made sure to clear query cache, etc. but to no avail.
Any thoughts?vectorpj wrote:
I've made sure to clear query cache, etc. but to no avail.
Which 'query cache' did you clear?
vectorpj wrote:
Any thoughts?
DO NOT USE
SELECT *
When you do, the database driver will cache the table structure the first time it is executed, and from then on it will not see any changes made to the table in the database, until such a time as this 'cache' is cleared. And the only way, AFAIK, to do this is to restart services and|or servers. This can lead to a whole host of hard to debug issues, such as the one you are experiencing. -
Signal icons for available networks on wifi tab are missing :(
ive been having this problem since i upgraded to mountain lion.. the signal icons for available networks on wifi tab are missing..i do not have any problem with my connection but it would be better to see signal status before i connect to any available network....this is what it looks like...
i did that many times but its still not working . its only for the icon on the menu bar which i have...i'm missing those signal icons beside the lock icons when im trying to search for available networks. ..if you could notice the above photo, i encircled it..the lock icon is usually accompanied by a status signal icon but its now gone....
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External monitor won't wake up
I've just installed 10.5.8, and can no longer wake up my external monitor from sleep with the clamshell closed by pressing a key on my external keyboard, meaning that I now have to have the clamshell open (and macbook display active) when I want to use my external screen. I installed 10.5.8 specifically to solve the sleep issue that many users have been experiencing. Does anyone have any advice? Thanks.
I have the new 15" Retina MacBook Pro connected to a Thunderbolt display using one of the TB ports. Earlier today, I discovered that I could connect a second older 24" Dell Monitor (2405FPW) I've been using for years by using the DisplayPort to DVI adapter I had on my old iMac, and plugging the Dell directly into the second Thunderbolt port on the MBP. All was well, until the displays went to sleep (I have my laptop configured to not sleep for 3 hours, but have the displays sleep after about 15 minutes). When I came back, moving the mouse and typing on the keyboard brought the Thunderbolt Display back to life, but the Dell monitor remained dark. Pressing buttons on the Dell had the message "In Power Save Mode - press key on the keyboard" appear. I tried turning the monitor off, back on, unplugging the DVI cable from the MBP, all sorts of things. It just would not wake up. When going to the System Preferences, the dell WAS recognized. As I plugged and unplugged the DVI cable from the second TB port, the "Arrangement" tab would appear and go away. So, it SEEMED like it was working.
Final solution for me: I selected "Sleep" from the Apple menu to actually put the entire machine to sleep. I then jiggled the mouse, and the machine woke up, along with BOTH monitors!
So, it appears that if just the monitors go to sleep, the "wake" signal is not making it to the Dell. If the ENTIRE MACHINE sleeps, they all wake together.
Hope that helps someone. I couldn't find an answer, so I found it trial-and-error.
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