if (VERBOSE) {
System.out.println("write stream=" + stream);
}
if (starts[stream] == -1) {
final int spot = pool.newSlice(ByteBlockPool.FIRST_LEVEL_SIZE);
starts[stream] = uptos[stream] = spot + pool.byteOffset;
if (VERBOSE) {
System.out.println(" init to " + starts[stream]);
}
}