Akka 2.5分布式数据在Docker + Alpine Linux上

在将使用Akka + Akka集群分片的服务升级到新发布的Akka(2.5.0)之后,我们开始遇到在Docker + Alpine Linux中启动系统的问题。 从我可以推断,Akka集群分片被configuration为使用Akka分布式数据(这不是实验了2.5.0),并且它使用LMDB(这需要GCC + glibc,而不是在Alpine Linux中可用)。

我的问题如下:

1)是否有任何标准的select支持Akka而不是LMDB?

2)有没有办法让LMDB在Alpine Linux上工作?

堆栈跟踪:

[ERROR] [04/20/2017 13:42:19.014] [lotus-akka.actor.default-dispatcher-5] [akka://lotus/system/sharding/replicator/durableStore] Error relocating /tmp/lmdbjava-native-library-5972006786989102785.so: __fprintf_chk: symbol not found akka.actor.ActorInitializationException: akka://lotus/system/sharding/replicator/durableStore: exception during creation at akka.actor.ActorInitializationException$.apply(Actor.scala:191) at akka.actor.ActorCell.create(ActorCell.scala:600) at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:454) at akka.actor.ActorCell.systemInvoke(ActorCell.scala:476) at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:282) at akka.dispatch.Mailbox.run(Mailbox.scala:223) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at akka.util.Reflect$.instantiate(Reflect.scala:65) at akka.actor.ArgsReflectConstructor.produce(IndirectActorProducer.scala:96) at akka.actor.Props.newActor(Props.scala:213) at akka.actor.ActorCell.newActor(ActorCell.scala:555) at akka.actor.ActorCell.create(ActorCell.scala:581) ... 7 more Caused by: java.lang.UnsatisfiedLinkError: Error relocating /tmp/lmdbjava-native-library-5972006786989102785.so: __fprintf_chk: symbol not found at jnr.ffi.provider.jffi.NativeLibrary.loadNativeLibraries(NativeLibrary.java:87) at jnr.ffi.provider.jffi.NativeLibrary.getNativeLibraries(NativeLibrary.java:70) at jnr.ffi.provider.jffi.NativeLibrary.getSymbolAddress(NativeLibrary.java:49) at jnr.ffi.provider.jffi.NativeLibrary.findSymbolAddress(NativeLibrary.java:59) at jnr.ffi.provider.jffi.AsmLibraryLoader.generateInterfaceImpl(AsmLibraryLoader.java:158) at jnr.ffi.provider.jffi.AsmLibraryLoader.loadLibrary(AsmLibraryLoader.java:89) at jnr.ffi.provider.jffi.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:43) at jnr.ffi.LibraryLoader.load(LibraryLoader.java:325) at jnr.ffi.LibraryLoader.load(LibraryLoader.java:304) at org.lmdbjava.Library.<clinit>(Library.java:95) at org.lmdbjava.Env$Builder.open(Env.java:406) at org.lmdbjava.Env$Builder.open(Env.java:430) at akka.cluster.ddata.LmdbDurableStore.<init>(DurableStore.scala:131) ... 16 more 

终于设法解决了这个问题。 集群分片默认尝试使用持久存储(默认为LMDB)。 对于不使用remember-entities集群分片,不需要持久存储。

因此,解决scheme是通过添加以下configuration来禁用集群分片的持久存储

 akka.cluster.sharding.distributed-data.durable.keys = []