Re: [ecf-dev] ZooDiscovery causing a BundleException on startup (and onl

[Wim Jongman <wim.jongman@xxxxxxxxx>]

Hi,

The cause of this problem is that the start method of the activator
does not return within a reasonable amount of time. This is mostly
caused because starting Zookeeper starts other dependencies which
start their activator and so on. OSGi does not want to wait that long
and throws the exception. AFAICT this is harmless because ZK is not
really blocked. It happened to me too and I resolved it by starting
the Zookeeper bundles as late as possible.

Please try Markus' suggestion. If the problem persists please open a bug.

If you search for "timed out waiting (5000ms) for thread" there are
more. See [1] for an unrelated discussion on what can cause this
message.

Regards,

Wiim

[1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=167784

On Sat, Jan 8, 2011 at 6:47 PM, Patrick D. <pd4ecf@xxxxxxxxxxxxxx> wrote:
> Hello ECF Team,
> I chose to use ECF as the communication framework for my thesis project. So
> far it is really working great. However I can't get rid of an exception when
> starting ZooDiscovery. It seems to happen every time, regardless of what
> other bundles are loaded and happens even if I only add the ZooDiscovery
> Bundle and its dependencies. The exception does not prevent ZooDiscovery
> from functioning. It works completely.
> To not clog the message I uploaded the log to http://pastebin.com/N08zrp6s
> and attached it. Here's an excerpt, though:
> !MESSAGE While loading class
> "org.eclipse.ecf.provider.zookeeper.node.internal.WriteRoot", thread
> "Thread[pool-1-thread-1,5,main]" timed out waiting (5000ms) for thread
> "Thread[Start Level Event Dispatcher,5,main]" to finish starting bundle
> "org.eclipse.ecf.provider.zookeeper_1.0.100.v20101029-1626 [13]". To avoid
> deadlock, thread "Thread[pool-1-thread-1,5,main]" is proceeding but
> "org.eclipse.ecf.provider.zookeeper.node.internal.WriteRoot" may not be
> fully initialized.
> !STACK 0
> org.osgi.framework.BundleException: State change in progress for bundle
> "initial@reference:file:plugins/org.eclipse.ecf.provider.zookeeper_1.0.100.v20101029-1626.jar/"
> by thread "Start Level Event Dispatcher".
> [...]
> This happens right after the start of the framework, and I have absolutely
> no idea why. I searched Google for a solution but only found an old message
> from myself with a different problem but the exception already present. This
> frustrates me a bit, because it means I'm obviously the only person that's
> getting it.
> Can you tell me what's causing this? I have done fresh installations of
> Eclipse and ECF on different PCs and worked with different, small example
> projects, but the exception occurs every time.
> Thanks in advance,
> Patrick D.
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