cthumuluru opened a new pull request #464: CASSANDRA-15397: Resubmitting the 
changes with proposed review comments. 
URL: https://github.com/apache/cassandra/pull/464
 
 
   @belliottsmith — I made necessary changes to IntervalList implementation 
based on the feedback. The previous submission was moved to IntervalList2. I 
also refactored the other code to use the IntervalList instead of IntervalTree. 
You suggested to use 4 long[] arrays but I couldn't do so since the code uses a 
generic that is comparable. I'm not sure if assuming long will be a good idea. 
Instead I changed the implementation to use two lists one to store the interval 
points and the other to store the data. Based on my performance comparison, I 
see the previous submission performs better. It could be partly because it 
packs all the relevant data items together. I also added the performance 
comparison for 100k, 250, 500k, 750k and 1 million SSTables based on 1000 
searches. 

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