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From David Mosca <>
Subject RE: PyLucene Error Message
Date Thu, 29 Mar 2012 17:27:07 GMT
Unfortunately not. Interestingly enough I had already tried a sleep(1) when populating the
queue, with no results.

From: Greg Bowyer []
Sent: 29 March 2012 18:09
To: David Mosca
Subject: Re: PyLucene Error Message

Its a bit crap, but can you stick a time.sleep(0.5) just after the attach to see if that cures

On 29/03/2012 09:56, David Mosca wrote:
Yes I am using threads (threading module).

I initialise the JVM like this: jvm = lucene.initVM(initialheap='8G', maxheap='8G')

Then I use it as follows:

for i in range(8):
        t = ThreadSearch(queue, jvm)

with ThreadSearch built like this:

class ThreadSearch(threading.Thread):
    def __init__(self, queue, jvm):
        self.queue = queue
        self.jvm = jvm
    def run(self):

I have tried lucene.getVMEnv().attachCurrentThread() instead but I still get the same error



From: Greg Bowyer []
Sent: 29 March 2012 17:30
To: David Mosca
Subject: Re: PyLucene Error Message

Wow a VM / hotspot crash, are you using threads ?

If you are make sure you have correctly attached the vm env to each new thread *after* you
have initialised it on the main thread

This is done with the following

On 29/03/2012 09:10, David Mosca wrote:

I have re-attached the log.



-----Original Message-----

From: Greg Bowyer []

Sent: 29 March 2012 16:55


Subject: Re: PyLucene Error Message

I dont see any attached log, can you attach the log please.

-- Greg

On 29/03/2012 07:35, David Mosca wrote:


I am using Lucene version 3.4 through the Python extension (pylucene)

in a multi-threaded script. When I launch the script I sometimes get a

fatal error message (log attached) and sometimes not (I always launch

the same script, exactly in the same way). When I get the error

message I keep launching the script again until the script stops

crashing (it sometimes takes up to 5 or 6 times).

Could you please have a look into this?

Thank you.



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