java.lang.OutOfMemoryError: unable to create new native thread

[Maarten Becker]

Hi!

First of all, thanks for bringing this tool to us!

I'm trying to set up a docker install of vocbench like described in the documentation.

My system is:

VPS Host: Debian Buster 10

Dockerfile: as delivered here: https://bitbucket.org/art-uniroma2/vocbench3-docker/src/master/

Proxy: nginx

I can build the docker image and start it. Going to the external website the page loads and gets stuck when the users are queried (see attachment):

Looking for the docker log I find:

15:41:48.777 ERROR [features-3-thread-1] Bundle org.springframework.osgi.extender [279] EventDispatcher: Error during dispatch. (java.lang.OutOfMemoryError: unable to create new native thread)
java.lang.OutOfMemoryError: unable to create new native thread
    at java.lang.Thread.start0(Native Method)
    at java.lang.Thread.start(Thread.java:717)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.doExecute(SimpleAsyncTaskExecutor.java:193)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.execute(SimpleAsyncTaskExecutor.java:167)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.execute(SimpleAsyncTaskExecutor.java:148)
    at org.springframework.osgi.extender.internal.activator.ContextLoaderListener.maybeCreateApplicationContextFor(ContextLoaderListener.java:781)
    at org.springframework.osgi.extender.internal.activator.ContextLoaderListener$ContextBundleListener.handleEvent(ContextLoaderListener.java:229)
    at org.springframework.osgi.extender.internal.activator.ContextLoaderListener$BaseListener.bundleChanged(ContextLoaderListener.java:172)
    at org.apache.felix.framework.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:915)
    at org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:834)
    at org.apache.felix.framework.EventDispatcher.fireBundleEvent(EventDispatcher.java:516)
    at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4579)
    at org.apache.felix.framework.Felix.startBundle(Felix.java:2174)
    at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)
    at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:984)
    at org.apache.karaf.features.internal.service.BundleInstallSupportImpl.startBundle(BundleInstallSupportImpl.java:161)
    at org.apache.karaf.features.internal.service.FeaturesServiceImpl.startBundle(FeaturesServiceImpl.java:1116)
    at org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:997)
    at org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1025)
    at org.apache.karaf.features.internal.service.FeaturesServiceImpl.lambda$doProvisionInThread$13(FeaturesServiceImpl.java:964)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
15:41:48.801 ERROR [SpringOsgiExtenderThread-25] Unable to create application context for [it.uniroma2.art.semanticturkey.st-spreadsheet-serializing-exporter], unsatisfied dependencies: none
java.lang.OutOfMemoryError: unable to create new native thread
    at java.lang.Thread.start0(Native Method)
    at java.lang.Thread.start(Thread.java:717)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.doExecute(SimpleAsyncTaskExecutor.java:193)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.execute(SimpleAsyncTaskExecutor.java:167)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.execute(SimpleAsyncTaskExecutor.java:148)
    at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.stageTwo(DependencyWaiterApplicationContextExecutor.java:299)
    at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.stageOne(DependencyWaiterApplicationContextExecutor.java:244)
    at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.refresh(DependencyWaiterApplicationContextExecutor.java:169)
    at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.refresh(AbstractDelegatedExecutionApplicationContext.java:175)
    at org.springframework.osgi.extender.internal.activator.ContextLoaderListener$2.run(ContextLoaderListener.java:716)
    at java.lang.Thread.run(Thread.java:748)
15:41:48.978 ERROR [SpringOsgiExtenderThread-25] Application context refresh failed (OsgiBundleXmlApplicationContext(bundle=it.uniroma2.art.semanticturkey.st-spreadsheet-serializing-exporter, config=osgibundle:/META-INF/spring/*.xml))
java.lang.OutOfMemoryError: unable to create new native thread
    at java.lang.Thread.start0(Native Method)
    at java.lang.Thread.start(Thread.java:717)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.doExecute(SimpleAsyncTaskExecutor.java:193)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.execute(SimpleAsyncTaskExecutor.java:167)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.execute(SimpleAsyncTaskExecutor.java:148)
    at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.stageTwo(DependencyWaiterApplicationContextExecutor.java:299)
    at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.stageOne(DependencyWaiterApplicationContextExecutor.java:244)
    at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.refresh(DependencyWaiterApplicationContextExecutor.java:169)
    at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.refresh(AbstractDelegatedExecutionApplicationContext.java:175)
    at org.springframework.osgi.extender.internal.activator.ContextLoaderListener$2.run(ContextLoaderListener.java:716)
    at java.lang.Thread.run(Thread.java:748)
15:41:48.785 ERROR [FelixDispatchQueue] FrameworkEvent ERROR - org.springframework.osgi.extender
java.lang.OutOfMemoryError: unable to create new native thread
    at java.lang.Thread.start0(Native Method)
    at java.lang.Thread.start(Thread.java:717)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.doExecute(SimpleAsyncTaskExecutor.java:193)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.execute(SimpleAsyncTaskExecutor.java:167)
    at org.springframework.core.task.SimpleAsyncTaskExecutor.execute(SimpleAsyncTaskExecutor.java:148)
    at org.springframework.osgi.extender.internal.activator.ContextLoaderListener.maybeCreateApplicationContextFor(ContextLoaderListener.java:781)
    at org.springframework.osgi.extender.internal.activator.ContextLoaderListener$ContextBundleListener.handleEvent(ContextLoaderListener.java:229)
    at org.springframework.osgi.extender.internal.activator.ContextLoaderListener$BaseListener.bundleChanged(ContextLoaderListener.java:172)
    at org.apache.felix.framework.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:915)
    at org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:834)
    at org.apache.felix.framework.EventDispatcher.fireBundleEvent(EventDispatcher.java:516)
    at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4579)
    at org.apache.felix.framework.Felix.startBundle(Felix.java:2174)
    at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)
    at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:984)
    at org.apache.karaf.features.internal.service.BundleInstallSupportImpl.startBundle(BundleInstallSupportImpl.java:161)
    at org.apache.karaf.features.internal.service.FeaturesServiceImpl.startBundle(FeaturesServiceImpl.java:1116)
    at org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:997)
    at org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1025)
    at org.apache.karaf.features.internal.service.FeaturesServiceImpl.lambda$doProvisionInThread$13(FeaturesServiceImpl.java:964)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

Any hint what's going wrong here?

Thanks,

Maarten

[Maarten Becker]

I have been able to narrow down the main cause of trouble to be a missing handling of the SemanticTurkey part of the URL.

My nginx config now looks:

server {

.

.

.

location ^~/semanticturkey/ {
proxy_http_version 1.1;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_cookie_domain localhost vocbench.ius.services;
        proxy_pass http://0.0.0.0:1979/semanticturkey/;
 }
location / {
proxy_http_version 1.1;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_cookie_domain localhost vocbench.ius.services;
        proxy_pass http://0.0.0.0:1979/vocbench3/;
}

.

.

.

}

By doing that I got a response for the ST API call.

I had also to enlarge memory usage for the docker java by setting it in karaf/setenv .

Best regards,

Maarten