StateStoreCache (Apache Hadoop HDFS-RBF 3.5.0 API)
Description: declaration: package: org.apache.hadoop.hdfs.server.federation.store, interface: StateStoreCache

Package org.apache.hadoop.hdfs.server.federation.store

# Interface StateStoreCache

All Known Implementing Classes:
  `CachedRecordStore`, `DisabledNameserviceStore`, `DisabledNameserviceStoreImpl`, `MembershipNamenodeResolver`, `MembershipStore`, `MembershipStoreImpl`, `MountTableResolver`, `MountTableStore`, `MountTableStoreImpl`, `MultipleDestinationMountTableResolver`, `RouterStore`, `RouterStoreImpl`

public interface StateStoreCache
Interface for a cached copy of the State Store.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `boolean`
  `loadCache(boolean force)`
  Load the cache from the State Store.

- ## Method Details

  - ### loadCache

    boolean loadCache(boolean force) throws IOException
    Load the cache from the State Store. Called by the cache update service when the data has been reloaded.
    Parameters:
      `force` - If we force the load.
    Returns:
      If the cache was loaded successfully.
    Throws:
      `IOException` - If there was an error loading the cache.