Re: Why nodetool cleanup should be run sequentially after node joined a cluster

I confirm what Christophe said. I always ran them in parallel without any problem, really. Historically it was using only one compactor and impact in my clusters have always been acceptable. Nonetheless, newer Cassandra versions allow multiple compactor to work in parallel during cleanup and

Re: Why nodetool cleanup should be run sequentially after node joined a cluster

Hi Mikhail, Nodetool cleanup can add a fair amount of extra load (mostly IO) on your Cassandra nodes. Therefore it is recommended to run it during lower cluster usage, and one node at a time, in order to limit the impact on your cluster. There are no technical limitations that would prevent you

Why nodetool cleanup should be run sequentially after node joined a cluster

Hi, In https://docs.datastax.com/en/cassandra/3.0/cassandra/operations/opsAddNodeToCluster.html there is recommendation: 6) After all new nodes are running, run nodetool cleanup on each of the previously existing nodes