[jira] [Created] (HDFS-14330) Consider StorageID to choose volume

["Lisheng Sun (JIRA)" <ji...@apache.org>]

Lisheng Sun created HDFS-14330:
----------------------------------

             Summary: Consider StorageID to choose volume 
                 Key: HDFS-14330
                 URL: https://issues.apache.org/jira/browse/HDFS-14330
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: datanode
    Affects Versions: 3.0.0-alpha4
            Reporter: Lisheng Sun


RoundRobinVolumeChoosingPolicy#chooseVolume does not consider  parameter storageId. 

The {{BlockPlacementPolicy}} considers specific storages and return the infomation including storageId to client.
{code:java}
 @Override
  public V chooseVolume(final List<V> volumes, long blockSize, String storageId)
      throws IOException {

    if (volumes.size() < 1) {
      throw new DiskOutOfSpaceException("No more available volumes");
    }

    // As all the items in volumes are with the same storage type,
    // so only need to get the storage type index of the first item in volumes
    StorageType storageType = volumes.get(0).getStorageType();
    int index = storageType != null ?
            storageType.ordinal() : StorageType.DEFAULT.ordinal();

    synchronized (syncLocks[index]) {
      return chooseVolume(index, volumes, blockSize);
    }
  }
{code}



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-dev-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-dev-help@hadoop.apache.org