nikhilvavs opened a new issue #748: Huge CPU spike after upgrading from 0.8.2 to 0.8.4 URL: https://github.com/apache/helix/issues/748 We were using apache helix 0.8.2 and upgraded to using 0.8.4. After upgrading, we saw a huge spike in the CPU usage where it jumped from around 80% to 180% with the newer library.  On profiling the service, we saw that the upgraded version was spending a lot more time in helix code. And caused by introducing a synchronized block in [this commit](https://github.com/apache/helix/commit/8c8f79c5e545818c0e4478addea453fc42b6d003) Is there thing we can do to improve performance?
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