Package org.apache.drill.exec.coord.zk

Zookeeper/Curator integration code.

See: Description

Interface Summary

Interface	Description
ZKACLContextProvider	Defines the functions required by ZKACLProviderDelegate to access ZK-ACL related information
ZKACLProvider	This class defines the methods that are required to specify ACLs on Drill ZK nodes

Class Summary

Class	Description
EventDispatcher<V>	An abstraction used for dispatching store events.
PathUtils	A convenience class used to expedite zookeeper paths manipulations.
ZKACLContextProviderImpl
ZKACLProviderDelegate	This class hides the ZKACLProvider from Curator-specific functions This is done so that ACL Providers have to be aware only about ZK ACLs and the Drill ZKACLProvider interface ACL Providers should not be concerned with the framework (Curator) used by Drill to access ZK.
ZKACLProviderFactory	This factory returns a ZKACLProviderDelegate which will be used to set ACLs on Drill ZK nodes If secure ACLs are required, the ZKACLProviderFactory looks up and instantiates a ZKACLProviderDelegate specified in the config file.
ZKClusterCoordinator	Manages cluster coordination utilizing zookeeper.
ZKDefaultACLProvider	ZKDefaultACLProvider provides the ACLs for znodes created in a un-secure installation.
ZkDistributedSemaphore
ZkEphemeralStore<V>
ZKRegistrationHandle
ZKSecureACLProvider	ZKSecureACLProvider restricts access to znodes created by Drill in a secure installation.
ZkTransientStoreFactory
ZookeeperClient	A namespace aware Zookeeper client.

Annotation Types Summary

Annotation Type	Description
ZKACLProviderTemplate	Annotation for ZKACLProviderDelegate implementation to identify the implementation type.

Package org.apache.drill.exec.coord.zk Description

Zookeeper/Curator integration code. Zookeeper is a cluster coordination service used by Drill to maintain cluster membership information. Curator is a library built on top of Zookeeper that handles some of the lower level details of using Zookeeper.