Package org.apache.hadoop.hdfs.server.blockmanagement

Class BlockStoragePolicySuite

java.lang.Object
org.apache.hadoop.hdfs.server.blockmanagement.BlockStoragePolicySuite
public class BlockStoragePolicySuite extends Object
A collection of block storage policies.

  • Field Details

    • STORAGE_POLICY_XATTR_NAME

      public static final String STORAGE_POLICY_XATTR_NAME
      See Also:

    • XAttrNS

      public static final org.apache.hadoop.fs.XAttr.NameSpace XAttrNS

    • ID_BIT_LENGTH

      public static final int ID_BIT_LENGTH
      See Also:

  • Constructor Details

    • BlockStoragePolicySuite

      public BlockStoragePolicySuite(byte defaultPolicyID, org.apache.hadoop.hdfs.protocol.BlockStoragePolicy[] policies)

  • Method Details

    • createDefaultSuite

      @VisibleForTesting public static BlockStoragePolicySuite createDefaultSuite()

    • createDefaultSuite

      @VisibleForTesting public static BlockStoragePolicySuite createDefaultSuite(org.apache.hadoop.conf.Configuration conf)

    • getPolicy

      public org.apache.hadoop.hdfs.protocol.BlockStoragePolicy getPolicy(byte id)
      Returns:
      the corresponding policy.

    • getDefaultPolicy

      public org.apache.hadoop.hdfs.protocol.BlockStoragePolicy getDefaultPolicy()
      Returns:
      the default policy.

    • getPolicy

      public org.apache.hadoop.hdfs.protocol.BlockStoragePolicy getPolicy(String policyName)

    • getAllPolicies

      public org.apache.hadoop.hdfs.protocol.BlockStoragePolicy[] getAllPolicies()

    • buildXAttrName

      public static String buildXAttrName()

    • buildXAttr

      public static org.apache.hadoop.fs.XAttr buildXAttr(byte policyId)

    • getStoragePolicyXAttrPrefixedName

      public static String getStoragePolicyXAttrPrefixedName()

    • isStoragePolicyXAttr

      public static boolean isStoragePolicyXAttr(org.apache.hadoop.fs.XAttr xattr)