Jian He created YARN-4127:
-----------------------------
Summary: RM fail with noAuth error if switched from non-failover
mode to failover mode
Key: YARN-4127
URL: https://issues.apache.org/jira/browse/YARN-4127
Project: Hadoop YARN
Issue Type: Bug
Reporter: Jian He
The scenario is that RM failover was initially enabled, so the zkRootNodeAcl is
by default set with the *RM ID* in the ACL string
If RM failover is then switched to be disabled, it cannot load data from ZK
and fail with noAuth error. After I reset the root node ACL, it again can
access.
{code}
15/09/08 14:28:34 ERROR resourcemanager.ResourceManager: Failed to load/recover
state
org.apache.zookeeper.KeeperException$NoAuthException: KeeperErrorCode = NoAuth
at org.apache.zookeeper.KeeperException.create(KeeperException.java:113)
at org.apache.zookeeper.ZooKeeper.multiInternal(ZooKeeper.java:949)
at org.apache.zookeeper.ZooKeeper.multi(ZooKeeper.java:915)
at
org.apache.curator.framework.imps.CuratorTransactionImpl.doOperation(CuratorTransactionImpl.java:159)
at
org.apache.curator.framework.imps.CuratorTransactionImpl.access$200(CuratorTransactionImpl.java:44)
at
org.apache.curator.framework.imps.CuratorTransactionImpl$2.call(CuratorTransactionImpl.java:129)
at
org.apache.curator.framework.imps.CuratorTransactionImpl$2.call(CuratorTransactionImpl.java:125)
at org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:107)
at
org.apache.curator.framework.imps.CuratorTransactionImpl.commit(CuratorTransactionImpl.java:122)
at
org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$SafeTransaction.commit(ZKRMStateStore.java:1009)
at
org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.safeSetData(ZKRMStateStore.java:985)
at
org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.getAndIncrementEpoch(ZKRMStateStore.java:374)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceStart(ResourceManager.java:579)
at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.startActiveServices(ResourceManager.java:973)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$1.run(ResourceManager.java:1014)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$1.run(ResourceManager.java:1010)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1667)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.transitionToActive(ResourceManager.java:1010)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceStart(ResourceManager.java:1050)
at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:1194)
{code}
the problem may be that in non-failover mode, RM doesn't use the *RM-ID* to
connect with ZK and thus fail with no Auth error.
We should be able to switch failover on and off with no interruption to the
user.
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