protected void prepare() {
DatanodeReg dr = new DatanodeReg();
dr.setDatanodeNum(dataNum);
dr.init();
dr.runTest();
FileCreator fc = new FileCreator();
fc.setParams(threadNum, fileNum);
fc.init();
fc.runTest();
fidarray = fc.getCreatedFileIds();
BlockAllocator ba = new BlockAllocator();
ba.setParams(threadNum, blockNum, fidarray);
ba.init();
ba.runTest();
blkarray = ba.getBlockIdarray();
}
