I create a tailerA and use tailerA read to the 100th message. And I create another tailerB
ChronicleQueue queue = SingleChronicleQueueBuilder.single("/home/data").rollCycle(rollCycles).build()
ExcerptTailer tailerA = queue.createTailer("A")
ExcerptTailer tailerB = queue.createTailer("B")
for(int i = 1;i < 101;i++){
tailerA.read() <- this is a simplified code for read
}
Use tailerB to read,it supposed to read from 1th to 100th one by one ,But what I need is to use tailerB reading start from 100th message. How can I use tailerA to copy the 100th information into tailerB?
You can obtain the index an ExcerptTailer
points to with
long index = tailerA.index();
and you can set the tailer to be this index with
boolean success = tailerB.moveToIndex(index);
Assuming this is successful both tailers will read the same Excerpt next.