Intermittent error on startup: Error resolving artifact...

[Philipp Marx <sm...@googlemail.com>]

Hi,


I do see this error below intermittently on startup of Karaf. The
artifact is already available in the system-folder but still it seems
that it is being tried to resolved externally? This is not bound to
the spring feature mentioned in the stacktrace but fails with whatever
is the first feature mentioned in the "org.apache.karaf.features" as
"featuresRepositories".

Does anybody has an idea what could cause this? As said this is
intermittently and 9 of 10 startups do succeed.


Thanks in advance.


Cheers,

Philipp


2016-08-09T09:04:01,842 | ERROR |  |  |  |  |  | pool-9-thread-1 |
org.apache.karaf.features.internal.service.BootFeaturesInstaller |  |
Error installing boot feature repository
mvn:org.apache.karaf.features/spring/4.0.5/xml/features
java.io.IOException: Error resolving artifact
org.apache.karaf.features:spring:xml:features:4.0.5: Could not
transfer artifact org.apache.karaf.features:spring:xml:features:4.0.5
from/to central (http://repo1.maven.org/maven2/): Connection pool shut
down : mvn:org.apache.karaf.features/spring/4.0.5/xml/features
	at org.apache.karaf.features.internal.service.RepositoryImpl.load(RepositoryImpl.java:96)
[8:org.apache.karaf.features.core:4.0.5]
	at org.apache.karaf.features.internal.service.FeaturesServiceImpl.loadRepository(FeaturesServiceImpl.java:436)
[8:org.apache.karaf.features.core:4.0.5]
	at org.apache.karaf.features.internal.service.FeaturesServiceImpl.addRepository(FeaturesServiceImpl.java:456)
[8:org.apache.karaf.features.core:4.0.5]
	at org.apache.karaf.features.internal.service.FeaturesServiceImpl.addRepository(FeaturesServiceImpl.java:447)
[8:org.apache.karaf.features.core:4.0.5]
	at org.apache.karaf.features.internal.service.BootFeaturesInstaller.installBootFeatures(BootFeaturesInstaller.java:103)
[8:org.apache.karaf.features.core:4.0.5]
	at org.apache.karaf.features.internal.service.BootFeaturesInstaller.start(BootFeaturesInstaller.java:92)
[8:org.apache.karaf.features.core:4.0.5]
	at org.apache.karaf.features.internal.osgi.Activator.doStart(Activator.java:259)
[8:org.apache.karaf.features.core:4.0.5]
	at org.apache.karaf.util.tracker.BaseActivator.run(BaseActivator.java:233)
[8:org.apache.karaf.features.core:4.0.5]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[?:?]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[?:?]
	at java.lang.Thread.run(Thread.java:745) [?:?]
Caused by: java.io.IOException: Error resolving artifact
org.apache.karaf.features:spring:xml:features:4.0.5: Could not
transfer artifact org.apache.karaf.features:spring:xml:features:4.0.5
from/to central (http://repo1.maven.org/maven2/): Connection pool shut
down
	at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:661)
~[?:?]
	at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:598)
~[?:?]
	at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:576)
~[?:?]
	at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:550)
~[?:?]
	at org.ops4j.pax.url.mvn.internal.Connection.getInputStream(Connection.java:123)
~[?:?]
	at java.net.URL.openStream(URL.java:1045) ~[?:?]
	at org.apache.karaf.features.internal.service.RepositoryImpl.load(RepositoryImpl.java:91)
~[?:?]
	... 12 more