Why is one of your nodes only at 14.6% ownership? That's weird, unless you have a small rowcount.
Are you frequently deleting rows? Are you frequently writing rows at ONE? What version of cassandra? On Wed, Dec 2, 2020 at 9:56 AM Joe Obernberger <joseph.obernber...@gmail.com> wrote: > Hi All - this is my first post here. I've been using Cassandra for > several months now and am loving it. We are moving from Apache HBase to > Cassandra for a big data analytics platform. > > I'm using java to get rows from Cassandra and very frequently get a > java.util.NoSuchElementException when iterating through a ResultSet. If > I retry this query again (often several times), it works. The debug log > on the Cassandra nodes show this message: > org.apache.cassandra.service.DigestMismatchException: Mismatch for key > DecoratedKey > > My cluster looks like this: > > Datacenter: datacenter1 > ======================= > Status=Up/Down > |/ State=Normal/Leaving/Joining/Moving > -- Address Load Tokens Owns (effective) Host > ID Rack > UN 172.16.100.224 340.5 GiB 512 50.9% > 8ba646ac-2b33-49de-a220-ae9842f18806 rack1 > UN 172.16.100.208 269.19 GiB 384 40.3% > 4e0ba42f-649b-425a-857a-34497eb3036e rack1 > UN 172.16.100.225 282.83 GiB 512 50.4% > 247f3d70-d13b-4d68-9a53-2ed58e01a63e rack1 > UN 172.16.110.3 409.78 GiB 768 63.2% > 0abea102-06d2-4309-af36-a3163e8f00d8 rack1 > UN 172.16.110.4 330.15 GiB 512 50.6% > 2a5ae735-6304-4e99-924b-44d9d5ec86b7 rack1 > UN 172.16.100.253 98.88 GiB 128 14.6% > 6b528b0b-d7f7-4378-bba8-1857802d4f18 rack1 > UN 172.16.100.254 204.5 GiB 256 30.0% > 87d0cb48-a57d-460e-bd82-93e6e52e93ea rack1 > > I suspect this has to do with how I'm using consistency levels? > Typically I'm using ONE. I just set the dclocal_read_repair_chance to > 0.0, but I'm still seeing the issue. Any help/tips? > > Thank you! > > -Joe Obernberger > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org > For additional commands, e-mail: user-h...@cassandra.apache.org > >
