when histogram observe over (1 >> 32 - 2) times

[greymonster-mm]

when histogram observe over (1 >> 32 - 2) times , the write method will block....

countAndHotIdx use lower 63 bit as count , but hotCounts.count use 64 bit , when histogram observe over (1 >> 32 - 2) times , here will block always....

[beorn7]

I would be surprised if it happened in that way, but perhaps I'm misunderstanding you. Do you have a code example to reproduce the behavior? That would clarify a lot and would help to debug.