Similarly to T97024: some cassandra metrics sent with invalid values with cassandra 3.x Table metrics we're observing invalid values being reported to graphite:
ignoring [cassandra.restbase-dev1001-a.org.apache.cassandra.metrics.Table.local_group_default_T_parsoid_stash_html.meta.EstimatedPartitionSizeHistogram.value [J@7bef2a5 1493740310]