netudima commented on code in PR #4850:
URL: https://github.com/apache/cassandra/pull/4850#discussion_r3325328103
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src/java/org/apache/cassandra/db/ColumnFamilyStore.java:
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@@ -1531,6 +1531,7 @@ public void apply(PartitionUpdate update,
CassandraWriteContext context, boolean
StorageHook.instance.reportWrite(metadata.id, update);
metric.writeLatency.addNano(nanoTime() - start);
metric.totalRowsMutated.inc(update.affectedRowCount());
+
metric.rowsMutatedPerWriteHistogram.update(update.affectedRowCount());
Review Comment:
it will be slightly better from perf point of view to store
update.affectedRowCount() to a local var and use in for these two metrics
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