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Packages that use DatanodeDescriptor | |
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org.apache.hadoop.dfs | A distributed implementation of FileSystem . |
org.apache.hadoop.net | Network-related classes. |
Uses of DatanodeDescriptor in org.apache.hadoop.dfs |
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Method parameters in org.apache.hadoop.dfs with type arguments of type DatanodeDescriptor | |
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void |
JspHelper.DFSNodesStatus(ArrayList<DatanodeDescriptor> live,
ArrayList<DatanodeDescriptor> dead)
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void |
JspHelper.DFSNodesStatus(ArrayList<DatanodeDescriptor> live,
ArrayList<DatanodeDescriptor> dead)
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void |
JspHelper.sortNodeList(ArrayList<DatanodeDescriptor> nodes,
String field,
String order)
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Uses of DatanodeDescriptor in org.apache.hadoop.net |
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Methods in org.apache.hadoop.net that return DatanodeDescriptor | |
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DatanodeDescriptor |
NetworkTopology.chooseRandom(String scope)
randomly choose one node from scope if scope starts with ~, choose one from the all datanodes except for the ones in scope; otherwise, choose one from scope |
Methods in org.apache.hadoop.net with parameters of type DatanodeDescriptor | |
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void |
NetworkTopology.add(DatanodeDescriptor node)
Add a data node Update data node counter & rack counter if neccessary |
boolean |
NetworkTopology.contains(DatanodeDescriptor node)
Check if the tree contains data node node |
int |
NetworkTopology.getDistance(DatanodeDescriptor node1,
DatanodeDescriptor node2)
Return the distance between two data nodes It is assumed that the distance from one node to its parent is 1 The distance between two nodes is calculated by summing up their distances to their closest common ancestor. |
boolean |
NetworkTopology.isOnSameRack(DatanodeDescriptor node1,
DatanodeDescriptor node2)
Check if two data nodes are on the same rack |
void |
NetworkTopology.remove(DatanodeDescriptor node)
Remove a data node Update data node counter & rack counter if neccessary |
void |
NetworkTopology.sortByDistance(DatanodeDescriptor reader,
DatanodeDescriptor[] nodes)
Sorts nodes array by their distances to reader. |
void |
NetworkTopology.sortByDistance(DatanodeDescriptor reader,
DatanodeDescriptor[] nodes)
Sorts nodes array by their distances to reader. |
Method parameters in org.apache.hadoop.net with type arguments of type DatanodeDescriptor | |
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int |
NetworkTopology.countNumOfAvailableNodes(String scope,
List<DatanodeDescriptor> excludedNodes)
return the number of leaves in scope but not in excludedNodes if scope starts with ~, return the number of datanodes that are not in scope and excludedNodes; |
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