On Wed, Sep 2, 2020 at 7:54 PM Tobias Eriksson
wrote:
> Hi
>
> I am monitoring a 20+ node cluster, and 5 of them has an excessive GC
> Count
>
> Typically the nodes has 40-60,000 GC runs, but a handful has 4,000,000 GC
> runs
>
> And it is not temporary this is the same all the time, see diagram
I agree with Erick and believe it's most likely a hot partitions issue.
I'd check "Compacted partition maximum bytes" in nodetool tablestats on
those "affected" nodes and compare the result with the other nodes.
I'd also check how the cpu_load is affected. From my experience, during
excessive GC t
That would have been my first response too -- hot partitions. If you know
the partition keys, you can quickly confirm it with nodetool getendpoints.
Cheers!
>
