Probably the recently added "phone home" functionality (UDC). Just a guess,
though.
-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On
Behalf Of Adam Lehenbauer
Sent: Wednesday, October 13, 2010 9:49 AM
To: Neo4j user discussions
Subject: [SPAM] Re: [Neo4j] EmbeddedGraphDatabase shutdown leaves a Timer
thread running
I added:
Map map = new HashMap();
map.put("cache_type", "soft");
and gave the map to the EmbeddedGraphDatabase constructor; no change in
behavior.
I'm running:
Java HotSpot, 1.6.0_18
64 bit
Ubuntu 10.04 (lucid)
I've got 4 AMD Phenom cores.
On Wed, Oct 13, 2010 at 9:34 AM, Chris Gioran wrote:
> On Wed, Oct 13, 2010 at 4:11 PM, Adam Lehenbauer
> wrote:
> > I think I have the Getting Started example working, but after it creates
> the
> > nodes and shuts down, my JVM won't exit because there is a non-daemon
> Timer
> > thread running.
> >
> > I have an example class with a main() that is copied near-verbatim from
> > http://wiki.neo4j.org/content/Getting_Started_Guide except for the db
> path
> > and a few extra System.outs.
> >
> > Everything seems to work normally, but after shutting down
> > the EmbeddedGraphDatabase the JVM will not exit. A jstack shows a
running
> > java.util.TimerThread, which I assume is started by the database.
> >
> > Its stack is:
> >
> > ---
> > "Timer-0" prio=10 tid=0x7f59c0056800 nid=0xa29 in Object.wait()
> > [0x7f59bf6d5000]
> > java.lang.Thread.State: TIMED_WAITING (on object monitor)
> > at java.lang.Object.wait(Native Method)
> > - waiting on <0x7f5a1ed37270> (a java.util.TaskQueue)
> > at java.util.TimerThread.mainLoop(Timer.java:509)
> > - locked <0x7f5a1ed37270> (a java.util.TaskQueue)
> > at java.util.TimerThread.run(Timer.java:462)
> > ---
> >
> > I'm using the neo4j maven dependency: org.neo4j.neo4j, version=1.2.M01,
> > type=pom. When I changed this to neo4j-kernel, version=1.0 the JVM
exited
> as
> > expected (no code change on my end).
> >
> > Does anyone have any idea why this is happening?
> >
> > Adam
>
> Hi there,
>
> Could you run it with a configuration setting of "cache_type"="soft"
> and inform on the result?
> Also, describe a bit your environment (CPU, OS, JVM)
>
> cheers,
> CG
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