org.apache.hadoop.hdfs.server.blockmanagement
Interface MutableBlockCollection

All Superinterfaces:

org.apache.hadoop.hdfs.server.blockmanagement.BlockCollection

public interface MutableBlockCollection
extends org.apache.hadoop.hdfs.server.blockmanagement.BlockCollection

This interface is used by the block manager to expose a few characteristics of a collection of Block/BlockUnderConstruction.

Method Summary

void	setBlock(int index, org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo blk) Set the block at the given index.
BlockInfoUnderConstruction	setLastBlock(org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo lastBlock, org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor[] locations) Convert the last block of the collection to an under-construction block and set the locations.

Methods inherited from interface org.apache.hadoop.hdfs.server.blockmanagement.BlockCollection

computeContentSummary, getBlockReplication, getBlocks, getLastBlock, getName, getPreferredBlockSize, numBlocks

Method Detail

setBlock

void setBlock(int index,
              org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo blk)

Set the block at the given index.

setLastBlock

BlockInfoUnderConstruction setLastBlock(org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo lastBlock,
                                        org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor[] locations)
                                        throws IOException

Convert the last block of the collection to an under-construction block and set the locations.

Throws:

IOException