#16 DG goes into infinite loop. Sometimes throwing an exception

[Michael]

When DG is running on the attached schema XML file, when generating the movie.movie_info table it will go into an infinite loop. Sometimes it throws an exception but I have been unable to reproduce it again. Most of the time it doesn't display any errors at all.

If I get it to throw an exception I will post that as well.

121338 [main] INFO com.ibm.dg.DataGenerator - Generating data for 'movie.movie_info' table.
This table will have 1000 row(s).
Threads: 4, with around 250 row(s) per thread.
Comm. (stmts) Comm. (size) Commit Rate (stmts/s) Commit Rate (size/s)
======
4 531.0 B -1 null
4 531.0 B -1 null
4 531.0 B -1 null
4 531.0 B -1 null
4 531.0 B -1 null
4 531.0 B -1 null
4 531.0 B -1 null
4 531.0 B -1 null
^C166354 [Thread-0] WARN com.ibm.dg.DataGenerator - Shutting down.

While this was running I checked how many records were actually in the table and it was only 4, no matter how long DG was running for.

[Michael]

the schema file DG is trying to run on

[Michael]

Just found that I had copied one of the exceptions from before
Exception in thread "Thread-44" java.util.ConcurrentModificationException
at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:778)
at java.util.LinkedList$ListItr.next(LinkedList.java:713)
at java.util.AbstractCollection.toString(AbstractCollection.java:438)
at com.ibm.dg.generators.TextGenerator.getSentence(TextGenerator.java:542)
at com.ibm.dg.generators.TextGenerator.getSentence(TextGenerator.java:444)
at com.ibm.dg.generators.TextGenerator.generate(TextGenerator.java:292)
at com.ibm.dg.DB.Field.generate(Field.java:78)
at com.ibm.dg.DB.Table.getRandomSQLValues(Table.java:487)
at com.ibm.dg.threads.TableThread.getValues(TableThread.java:304)
at com.ibm.dg.threads.TableThread.run(TableThread.java:185)
at java.lang.Thread.run(Thread.java:636)

[Michael]

Issue appears to be with text generator. It ran fine when I commented out those fields