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Cluster is unbalanced


Hi,

Data volume varies a lot in our two DC cluster:

 Load       Tokens       Owns  

 20.01 GiB  256          ?     

 65.32 GiB  256          ?     

 60.09 GiB  256          ?     

 46.95 GiB  256          ?     

 50.73 GiB  256          ?     

kaiprodv2

=========

/Leaving/Joining/Moving

 Load       Tokens       Owns  

 25.19 GiB  256          ?     

 30.26 GiB  256          ?     

 9.82 GiB   256          ?     

 20.54 GiB  256          ?     

 9.7 GiB    256          ?     


I ran clearsnapshot, garbagecollect and cleanup, but it increased the size on heavier nodes instead of decreasing. Based on nodetool cfstats, I can see partition keys on each node varies a lot:

Number of partitions (estimate): 3142552

Number of partitions (estimate): 15625442

Number of partitions (estimate): 15244021

Number of partitions (estimate): 9592992

Number of partitions (estimate): 15839280

How can I diagnose this imbalance further?