HDP 升级后在 hadoop 集群中启动 Apache Twill 应用程序时 RequestHedgingRMFailoverProxyProvider 的 IllegalAccessError

Question

我正在尝试从 hadoop 集群启动 Apache Twill 应用程序，该集群最近从 HDP 2.2 升级到 HDP 2.5，但我收到 RequestHedgingRMFailoverProxyProvider class 的 llegalAccessError。此 class 是 org.apache.hadoop.yarn.client 包的一部分。我在 Application Master 中收到此错误。在 'accepted state'.

之后，工作状态直接进入 'not running state'

Exception in thread "Hadoop22YarnAMClient STARTING" Exception in thread "YarnAMClientService STARTING" java.lang.IllegalAccessError: tried to access method org.apache.hadoop.yarn.client.ConfiguredRMFailoverProxyProvider.getProxyInternal()Ljava/lang/Object; from class org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider
at org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider.init(RequestHedgingRMFailoverProxyProvider.java:75)
at org.apache.hadoop.yarn.client.RMProxy.createRMFailoverProxyProvider(RMProxy.java:163)
at org.apache.hadoop.yarn.client.RMProxy.createRMProxy(RMProxy.java:93)
at org.apache.hadoop.yarn.client.ClientRMProxy.createRMProxy(ClientRMProxy.java:72)
at org.apache.hadoop.yarn.client.api.impl.AMRMClientImpl.serviceStart(AMRMClientImpl.java:186)
at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at org.apache.twill.internal.yarn.Hadoop21YarnAMClient.startUp(Hadoop21YarnAMClient.java:77)
at com.google.common.util.concurrent.AbstractIdleService.run(AbstractIdleService.java:43)
at java.lang.Thread.run(Thread.java:745)
com.google.common.util.concurrent.ExecutionError: java.lang.IllegalAccessError: tried to access method org.apache.hadoop.yarn.client.ConfiguredRMFailoverProxyProvider.getProxyInternal()Ljava/lang/Object; from class org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider
at com.google.common.util.concurrent.Futures.wrapAndThrowUnchecked(Futures.java:1008)
at com.google.common.util.concurrent.Futures.getUnchecked(Futures.java:1001)
at com.google.common.util.concurrent.AbstractService.startAndWait(AbstractService.java:220)
at com.google.common.util.concurrent.AbstractIdleService.startAndWait(AbstractIdleService.java:106)
at org.apache.twill.internal.appmaster.ApplicationMasterMain$YarnAMClientService.startUp(ApplicationMasterMain.java:221)
at com.google.common.util.concurrent.AbstractIdleService.run(AbstractIdleService.java:43)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalAccessError: tried to access method org.apache.hadoop.yarn.client.ConfiguredRMFailoverProxyProvider.getProxyInternal()Ljava/lang/Object; from class org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider
at org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider.init(RequestHedgingRMFailoverProxyProvider.java:75)
at org.apache.hadoop.yarn.client.RMProxy.createRMFailoverProxyProvider(RMProxy.java:163)
at org.apache.hadoop.yarn.client.RMProxy.createRMProxy(RMProxy.java:93)
at org.apache.hadoop.yarn.client.ClientRMProxy.createRMProxy(ClientRMProxy.java:72)
at org.apache.hadoop.yarn.client.api.impl.AMRMClientImpl.serviceStart(AMRMClientImpl.java:186)
at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at org.apache.twill.internal.yarn.Hadoop21YarnAMClient.startUp(Hadoop21YarnAMClient.java:77)
... 2 more

Answer 1

通常，当您看到 IllegalAccessError 时，这意味着编译代码和运行时代码之间存在运行时不兼容问题。在这种情况下， ConfiguredRMFailoverProxyProvider 的 getProxyInternal() 方法现在是私有的。您需要重新编译您的客户端代码 and/or 使用更新的 hadoop 客户端库连接到您的集群。