groovy

deadlock in MemoryAwareConcurrentReadMap.get

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Critical Critical
  • Resolution: Fixed
  • Affects Version/s: 1.1-beta-1
  • Fix Version/s: 1.1-beta-2
  • Component/s: groovy-jdk
  • Labels:
    None
  • Environment:
    Linux JDK 1.5
  • Number of attachments :
    1

Description

I've found a deadlock in MemoryAwareConcurrentReadMap.get that affects calls to MetaClassRegistryImpl.getMetaClass. This particular case seems to happen very infrequently; the last time I saw it happen was after my program had been running for 4.5 hours. I have seen it more than once, however, so I'm fairly certain this bug will strike any Groovy program that runs long enough.

This issue may be related GROOVY-1890 but I can't be certain from the information I have.

Issue Links

This issue duplicates:
GROOVY-1890 MemoryAwareConcurrentReadMap cause thred dead lock,it will hang our application at some time. Blocker Closed

Activity

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Guillaume Laforge added a comment -

Could you try with a snapshot of Groovy 1.1-beta-2 that you can download there?
http://build.canoo.com/groovy/

I encountered this problem with beta-1, but this problem has been solved with GROOVY-1890, so you shouldn't have it anymore.
If you could double-check, that would be great.

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Guillaume Laforge added a comment - Could you try with a snapshot of Groovy 1.1-beta-2 that you can download there? http://build.canoo.com/groovy/ I encountered this problem with beta-1, but this problem has been solved with GROOVY-1890, so you shouldn't have it anymore. If you could double-check, that would be great.
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Guillaume Laforge added a comment -

I've had a closer look at the stacktraces you got, and the ones I had too, and they are the same.
So I can confirm you this bug is fixed by GROOVY-1890 in SVN Trunk.
The fix will be in Groovy 1.1-beta-2.

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Guillaume Laforge added a comment - I've had a closer look at the stacktraces you got, and the ones I had too, and they are the same. So I can confirm you this bug is fixed by GROOVY-1890 in SVN Trunk. The fix will be in Groovy 1.1-beta-2.
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Guillaume Laforge added a comment -

Already fixed in SVN Trunk.
Fix available in Groovy 1.1-beta-2.

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Guillaume Laforge added a comment - Already fixed in SVN Trunk. Fix available in Groovy 1.1-beta-2.
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blackdrag blackdrag added a comment -

As I found a free version of java5's ConcurrentreaderMap I will MemoryAwareConcurrentReadMap class and replace it, with a new version based on the ConcurrentReaderMap.

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blackdrag blackdrag added a comment - As I found a free version of java5's ConcurrentreaderMap I will MemoryAwareConcurrentReadMap class and replace it, with a new version based on the ConcurrentReaderMap.
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John Williams added a comment -

I switched to 1.1-BETA-2 and the problem seems to have disappeared as expected. My program that originally hung after 4.5 hours has run for nearly 18 hours now with no problems.

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John Williams added a comment - I switched to 1.1-BETA-2 and the problem seems to have disappeared as expected. My program that originally hung after 4.5 hours has run for nearly 18 hours now with no problems.
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blackdrag blackdrag added a comment -

I very much hope it... not only was the other deadlock fixed, the map is now replaced with a new version that is based on ConcurrentReaderHashMap and should be free of deadlocks.. I hope.. If you have tested it in the last 10 hours or so, then you should have the new map

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blackdrag blackdrag added a comment - I very much hope it... not only was the other deadlock fixed, the map is now replaced with a new version that is based on ConcurrentReaderHashMap and should be free of deadlocks.. I hope.. If you have tested it in the last 10 hours or so, then you should have the new map

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Dates

  • Created:
    Updated:
    Resolved:
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