Openhab swallows root until Raspi dies

norbert_jordan · October 29, 2022, 10:20pm

Hello,
i have the following installation. Raspi4 4GB, SD32GB
openHAB 3.4.0.M3

Recently, every 1-2 weeks openhab does not react anymore, so no more MQTT communications, almost dead. When entering SSH i can see that the root folder is almost FULL and of course the logs are taking gigabytes…
i’m not a java/openhab expert to totally understand these logs, for me it looks like influxdb connection is getting problems, but maybe thats not the root cause. i would be pleased if experts could have a look and tell me what makes my system crash after a while…did not happen before latest updates, but not sure if it was the last or the one before Milestone…

I now checked the logs:
daemon log from LINUX:

Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.lang.Thread.run(Thread.java:829)
Oct 29 08:25:15 SmartPi karaf[679]: java.lang.NullPointerException
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.dequeue(LinkedBlockingQueue.java:214)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.lang.Thread.run(Thread.java:829)
Oct 29 08:25:15 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636937" java.lang.NullPointerException
Oct 29 08:25:15 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636941" Exception in thread "EventAdminAsyncThread #6636940" #011at java.base/java.util.concurrent.LinkedBlockingQueue.dequeue(LinkedBlockingQueue.java:214)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
Oct 29 08:25:15 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636942" #011at java.base/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
Oct 29 08:25:15 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636944" Exception in thread "EventAdminAsyncThread #6636943" #011at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:111>
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
Oct 29 08:25:15 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636945" Exception in thread "EventAdminAsyncThread #6636946" #011at java.base/java.lang.Thread.run(Thread.java:829)
Oct 29 08:25:15 SmartPi karaf[679]: java.lang.NullPointerException
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.dequeue(LinkedBlockingQueue.java:214)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
Oct 29 08:25:15 SmartPi karaf[679]: #011at java.base/java.lang.Thread.run(Thread.java:829)
Oct 29 08:25:15 SmartPi karaf[679]: java.lang.NullPointerException

syslog from linux:

Oct 29 08:25:13 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636820" java.lang.NullPointerException
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.dequeue(LinkedBlockingQueue.java:214)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.lang.Thread.run(Thread.java:829)
Oct 29 08:25:13 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636822" java.lang.NullPointerException
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.dequeue(LinkedBlockingQueue.java:214)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
Oct 29 08:25:13 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636824" #011at java.base/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
Oct 29 08:25:13 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636823" #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.lang.Thread.run(Thread.java:829)
Oct 29 08:25:13 SmartPi karaf[679]: java.lang.NullPointerException
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.dequeue(LinkedBlockingQueue.java:214)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
Oct 29 08:25:13 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636826" #011at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.lang.Thread.run(Thread.java:829)
Oct 29 08:25:13 SmartPi karaf[679]: java.lang.NullPointerException
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.dequeue(LinkedBlockingQueue.java:214)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.lang.Thread.run(Thread.java:829)
Oct 29 08:25:13 SmartPi karaf[679]: java.lang.NullPointerException
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.dequeue(LinkedBlockingQueue.java:214)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
Oct 29 08:25:13 SmartPi karaf[679]: #011at java.base/java.lang.Thread.run(Thread.java:829)
Oct 29 08:25:13 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636827" java.lang.NullPointerException
Oct 29 08:25:13 SmartPi karaf[679]: Exception in thread "EventAdminAsyncThread #6636825" #011at java.base/java.util.concurrent.LinkedBlockingQueue.dequeue(LinkedBlockingQueue.java:214)

and of course the openhab log section when this crash/extreme logging starts to happen:

2022-10-29 00:11:07.528 [WARN ] [e.io.http.servlet.BaseOpenHABServlet] - Received unknown command '---' for item 'RestO2state'
2022-10-29 00:11:10.238 [ERROR] [org.influxdb.impl.BatchProcessor    ] - Batch could not be sent. Data will be lost
org.influxdb.InfluxDBIOException: java.net.SocketTimeoutException: timeout
        at org.influxdb.impl.InfluxDBImpl.execute(InfluxDBImpl.java:831) ~[bundleFile:?]
        at org.influxdb.impl.InfluxDBImpl.write(InfluxDBImpl.java:460) ~[bundleFile:?]
        at org.influxdb.impl.OneShotBatchWriter.write(OneShotBatchWriter.java:22) ~[bundleFile:?]
        at org.influxdb.impl.BatchProcessor.write(BatchProcessor.java:340) [bundleFile:?]
        at org.influxdb.impl.BatchProcessor$1.run(BatchProcessor.java:287) [bundleFile:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) [?:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
        at java.lang.Thread.run(Thread.java:829) [?:?]
Caused by: java.net.SocketTimeoutException: timeout
        at okio.Okio$4.newTimeoutException(Okio.java:232) ~[bundleFile:?]
        at okio.AsyncTimeout.exit(AsyncTimeout.java:286) ~[bundleFile:?]
        at okio.AsyncTimeout$2.read(AsyncTimeout.java:241) ~[bundleFile:?]
        at okio.RealBufferedSource.indexOf(RealBufferedSource.java:358) ~[bundleFile:?]
        at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:230) ~[bundleFile:?]
        at okhttp3.internal.http1.Http1ExchangeCodec.readHeaderLine(Http1ExchangeCodec.java:242) ~[bundleFile:?]
        at okhttp3.internal.http1.Http1ExchangeCodec.readResponseHeaders(Http1ExchangeCodec.java:213) ~[bundleFile:?]
        at okhttp3.internal.connection.Exchange.readResponseHeaders(Exchange.java:115) ~[bundleFile:?]
        at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:94) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:43) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:94) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:88) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at org.influxdb.impl.BasicAuthInterceptor.intercept(BasicAuthInterceptor.java:22) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at org.influxdb.impl.GzipRequestInterceptor.intercept(GzipRequestInterceptor.java:42) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at okhttp3.logging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.java:152) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:229) ~[bundleFile:?]
        at okhttp3.RealCall.execute(RealCall.java:81) ~[bundleFile:?]
        at retrofit2.OkHttpCall.execute(OkHttpCall.java:188) ~[bundleFile:?]
        at org.influxdb.impl.InfluxDBImpl.execute(InfluxDBImpl.java:819) ~[bundleFile:?]

        at retrofit2.OkHttpCall.execute(OkHttpCall.java:188) ~[bundleFile:?]
        at org.influxdb.impl.InfluxDBImpl.execute(InfluxDBImpl.java:819) ~[bundleFile:?]
        ... 10 more
Caused by: java.net.SocketException: Socket closed
        at java.net.SocketInputStream.read(SocketInputStream.java:183) ~[?:?]
        at java.net.SocketInputStream.read(SocketInputStream.java:140) ~[?:?]
        at okio.Okio$2.read(Okio.java:140) ~[bundleFile:?]
        at okio.AsyncTimeout$2.read(AsyncTimeout.java:237) ~[bundleFile:?]
        at okio.RealBufferedSource.indexOf(RealBufferedSource.java:358) ~[bundleFile:?]
        at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:230) ~[bundleFile:?]
        at okhttp3.internal.http1.Http1ExchangeCodec.readHeaderLine(Http1ExchangeCodec.java:242) ~[bundleFile:?]
        at okhttp3.internal.http1.Http1ExchangeCodec.readResponseHeaders(Http1ExchangeCodec.java:213) ~[bundleFile:?]
        at okhttp3.internal.connection.Exchange.readResponseHeaders(Exchange.java:115) ~[bundleFile:?]
        at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:94) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:43) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:94) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:88) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at org.influxdb.impl.BasicAuthInterceptor.intercept(BasicAuthInterceptor.java:22) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at org.influxdb.impl.GzipRequestInterceptor.intercept(GzipRequestInterceptor.java:42) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at okhttp3.logging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.java:152) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[bundleFile:?]
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[bundleFile:?]
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:229) ~[bundleFile:?]
        at okhttp3.RealCall.execute(RealCall.java:81) ~[bundleFile:?]
        at retrofit2.OkHttpCall.execute(OkHttpCall.java:188) ~[bundleFile:?]
        at org.influxdb.impl.InfluxDBImpl.execute(InfluxDBImpl.java:819) ~[bundleFile:?]
        ... 10 more
2022-10-29 00:11:12.203 [WARN ] [org.apache.karaf.services.eventadmin] - EventAdmin: Exception: java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory or process/resource limits reached
java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory or process/resource limits reached
        at java.lang.Thread.start0(Native Method) ~[?:?]
        at java.lang.Thread.start(Thread.java:798) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:937) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1343) ~[?:?]
        at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118) ~[?:?]
        at org.apache.felix.eventadmin.impl.tasks.DefaultThreadPool.executeTask(DefaultThreadPool.java:134) ~[?:?]
        at org.apache.felix.eventadmin.impl.tasks.AsyncDeliverTasks.execute(AsyncDeliverTasks.java:102) ~[?:?]
        at org.apache.felix.eventadmin.impl.handler.EventAdminImpl.postEvent(EventAdminImpl.java:180) ~[?:?]
        at org.apache.felix.eventadmin.impl.security.EventAdminSecurityDecorator.postEvent(EventAdminSecurityDecorator.java:79) ~[?:?]
        at jdk.internal.reflect.GeneratedMethodAccessor238.invoke(Unknown Source) ~[?:?]
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
        at org.eclipse.osgi.internal.log.EventAdminLogListener.lambda$0(EventAdminLogListener.java:74) ~[org.eclipse.osgi-3.17.200.jar:?]
        at java.securit

norbert_jordan · October 29, 2022, 10:24pm

important to mention, after a reboot and killing all these giga-log files, its running fine again… until next time after 1-2 weeks it will not react anymore and show the same behaviour. As already mentioned. the system components liek influxdb and openhab have not changed for years now, influxdb is on 1.8.6…

Chiuaua79 · October 30, 2022, 3:37pm

Are you running Zulu java? I’ve had this similar problem (threadpool count) every 6 to 8 weeks. Searching the forum, it seems more people had this issue and it seemed to point to Zulu java.

I have replaced it by openjdk and had no issues since. I believe openhab currently recommends “Adopt openjdk”.

norbert_jordan · October 30, 2022, 9:25pm

thanks a lot for your reply and that starting point.
i’m on zulu as this is at least their documentation-reported “recommendation for Java”…
they explicit mention that openjdk has some limitations…

will check the community for this well known issue. Many thanks again for letting me know.

Cheers,
Norbert

Chiuaua79 · October 31, 2022, 5:14am

See this recent topic where the issue with the official docs is discussed that the docs still recommend Zulu java whereas that is old information.

And this topic for the syslog issue where in the end Adopt openjdk is recommended.

norbert_jordan · October 31, 2022, 11:07pm

thanks again for your feedback.

I will switch to adoptopenJDK. I already selected the right installation package for my Raspi4 arm32, hotspot(??) but what do i have to do next after i have the tar.gz compressed file on my raspi?

Is there any helpful step by step instructions, i tried the forum and external links but some of the links i screened did more or less look like someone forcing in the java environment overwriting the openJDK files, which does look a little rude to me.

If you have some short description of how i now can install/setup adoptopenJDK i would be pleased, many thanks Norbert

Chiuaua79 · November 1, 2022, 5:14am

That depends. I understand that openhabian has a menu option to install Adopt openjdk (note: openhabian as being the operating system for your Pi and not Raspberry Pi OS or ubuntu or…)

Personally I have Raspberry OS and installed regular OpenJDK from the repository and after that I changed my default java with


sudo update-alternatives --config java

Smooth ever since, so also with Openjdk from the repo.

norbert_jordan · November 1, 2022, 9:24pm

thanks, so you took the “simple” openjdk via apt package manager.

But adoptopenjdk is another branch? so you did not taken the one from adopt ?

Thanks

Chiuaua79 · November 2, 2022, 4:35pm

That is correct. I used openjdk from package manager.