@LimitedPrivate("HDFS") @Evolving

Package org.apache.hadoop.hdfs.server.datanode.checker

Datanode support for running disk checks.

Interface Summary

Interface	Description
AsyncChecker<K,V>	A class that can be used to schedule an asynchronous check on a given Checkable.
Checkable<K,V>	A Checkable is an object whose health can be probed by invoking its Checkable.check(K) method.
DatasetVolumeChecker.Callback	A callback interface that is supplied the result of running an async disk check on multiple volumes.

Class Summary

Class	Description
AbstractFuture<V>	An abstract implementation of ListenableFuture, intended for advanced users only.
DatasetVolumeChecker	A class that encapsulates running disk checks against each volume of an FsDatasetSpi and allows retrieving a list of failed volumes.
StorageLocationChecker	A utility class that encapsulates checking storage locations during DataNode startup.
ThrottledAsyncChecker<K,V>	An implementation of AsyncChecker that skips checking recently checked objects.

Enum Summary

Enum	Description
VolumeCheckResult	Defines the outcomes of running a disk check operation against a volume.