/** @return true if all of the blocks in this file are marked as completed. */
private boolean allBlocksComplete() throws StorageException, TransactionContextException {
for (BlockInfo b : getBlocks()) {
if (!b.isComplete()) {
return false;
}
}
return true;
}
/**
* Update the length for the last block
*
* @param lastBlockLength The length of the last block reported from client
* @throws IOException
*/
void updateLengthOfLastBlock(long lastBlockLength) throws IOException, StorageException {
BlockInfo lastBlock = this.getLastBlock();
assert (lastBlock != null)
: "The last block for path " + this.getFullPathName() + " is null when updating its length";
assert (lastBlock instanceof BlockInfoUnderConstruction)
: "The last block for path "
+ this.getFullPathName()
+ " is not a BlockInfoUnderConstruction when updating its length";
lastBlock.setNumBytes(lastBlockLength);
}
public void removeBlock(BlockInfo block) throws StorageException, TransactionContextException {
BlockInfo[] blks = getBlocks();
int index = block.getBlockIndex();
block.setBlockCollection(null);
if (index != blks.length) {
for (int i = index + 1; i < blks.length; i++) {
blks[i].setBlockIndex(i - 1);
}
}
}
/** Convert the last block of the file to an under-construction block. Set its locations. */
@Override
public BlockInfoUnderConstruction setLastBlock(BlockInfo lastBlock, DatanodeDescriptor[] targets)
throws IOException, StorageException {
if (numBlocks() == 0) {
throw new IOException("Failed to set last block: File is empty.");
}
BlockInfoUnderConstruction ucBlock =
lastBlock.convertToBlockUnderConstruction(BlockUCState.UNDER_CONSTRUCTION, targets);
ucBlock.setBlockCollection(this);
setBlock(numBlocks() - 1, ucBlock);
return ucBlock;
}