launchdarkly-java-server-sdk:6.3.0 : causing LdFeatureFlagClient not initialized after '10' seconds! Until we restart the machine intermittently.

[swapnil-kotwal-sp]

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Describe the bug
A clear and concise description of what the bug is.

We are using launchdarkly-java-server-sdk:6.3.0 and our pipelines are usually failing with error as

09:22:24.112 ERROR c.s.f.i.LDFeatureFlagClient    : Unable to start the LD feature flag client
java.lang.IllegalStateException: LdFeatureFlagClient not initialized after '10' seconds!

I found that I restarted my IDE(IntelliJ), flushed IntelliJ cache and even tried to console but every time the error persists. But, when I restarted the machine, error goes away. This is annoying as it is failing my release pipelines in intermittently.

To reproduce
Steps to reproduce the behavior.
Use launchdarkly-java-server-sdk:6.3.0 and run your tests, if you encountered with LdFeatureFlagClient not initialized after '10' seconds! you need to restart machine else the error won't go away.

Expected behavior
A clear and concise description of what you expected to happen.
LDClint should start within given 10 second time.

Logs
If applicable, add any log output related to your problem.

 1 error
[ERROR] 	at com.google.inject.internal.InjectorImpl$4.get(InjectorImpl.java:987)
[ERROR] 	at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1013)

[ERROR] 	... 52 more
[ERROR] Caused by: java.lang.IllegalStateException: LdFeatureFlagClient not initialized after '10' seconds!
[ERROR] 	at com.abc.featureflag.impl.LDFeatureFlagClient.start(LDFeatureFlagClient.java:222)
[ERROR] 	at com.abc.test.service.LdFeatureFlagService.start(LdFeatureFlagService.java:117)
[ERROR] 	at com.abc.test.service.AuthenticationService.<init>(AuthenticationService.java:57)
[ERROR] 	at com.abc.test.service.abc$$FastClassByGuice$$99a16d84.newInstance(<generated>)
[ERROR] 	at com.google.inject.internal.cglib.reflect.$FastConstructor.newInstance(FastConstructor.java:40)
[ERROR] 	at com.google.inject.internal.DefaultConstructionProxyFactory$1.newInstance(DefaultConstructionProxyFactory.java:60)
[ERROR] 	at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:85)
[ERROR] 	at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:254)
[ERROR] 	at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
[ERROR] 	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1031)
[ERROR] 	at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
[ERROR] 	at com.google.inject.Scopes$1$1.get(Scopes.java:65)
[ERROR] 	at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:40)
[ERROR] 	at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
[ERROR] 	at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
[ERROR] 	at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:84)
[ERROR] 	at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:254)
[ERROR] 	at com.google.inject.internal.InjectorImpl$4$1.call(InjectorImpl.java:978)
[ERROR] 	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1024)
[ERROR] 	at com.google.inject.internal.InjectorImpl$4.get(InjectorImpl.java:974)
[ERROR] 	... 55 more

....
java.lang.IllegalStateException: LdFeatureFlagClient not initialized after '10' seconds!

SDK version
The version of this SDK that you are using.
launchdarkly-java-server-sdk:6.3.0

Language version, developer tools
For instance, Go 1.11 or Ruby 2.5.3. If you are using a language that requires a separate compiler, such as C, please include the name and version of the compiler too.

JAVA-11

OS/platform
For instance, Ubuntu 16.04, Windows 10, or Android 4.0.3. If your code is running in a browser, please also include the browser type and version.

macOs: 14.4.1

Additional context
Add any other context about the problem here.

[tanderson-ld]

Hi @swapnil-kotwal-sp.

Have you ever seen any SocketTimouetExceptions or other connectivity exceptions ever when experiencing this issue?

How frequently do you see this issue?
Have you ever seen it on a production server environment?
Does the Mac you use run any firewall or VPN software?

I am not familiar with the logging well enough to know if the logs you attached are the debug level logs. If you see the issue again, would you mind enabling debug logging, reproducing it, and then attaching the full logs.

[swapnil-kotwal-sp]

Thanks @tanderson-ld , this issue is intermittent but hit us once in blue moon. I'll enable logs if encountered with it again