}
numEdits++;
switch (opcode) {
case OP_ADD: {
UTF8 name = new UTF8();
ArrayWritable aw = null;
Writable writables[];
// version 0 does not support per file replication
if( logVersion >= 0 )
name.readFields(in); // read name only
else { // other versions do
// get name and replication
aw = new ArrayWritable(UTF8.class);
aw.readFields(in);
writables = aw.get();
if( writables.length != 2 )
throw new IOException("Incorrect data fortmat. "
+ "Name & replication pair expected");
name = (UTF8) writables[0];
replication = Short.parseShort(
((UTF8)writables[1]).toString());
replication = adjustReplication( replication, conf );
}
// get blocks
aw = new ArrayWritable(Block.class);
aw.readFields(in);
writables = aw.get();
Block blocks[] = new Block[writables.length];
System.arraycopy(writables, 0, blocks, 0, blocks.length);
// add to the file tree
fsDir.unprotectedAddFile(name, blocks, replication );
break;