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.