bkonold commented on a change in pull request #1301: Samza-2478: Add new
metrics to track key and value size of records written to RocksDb
URL: https://github.com/apache/samza/pull/1301#discussion_r389163900
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File path:
samza-kv/src/main/scala/org/apache/samza/storage/kv/SerializedKeyValueStore.scala
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@@ -62,7 +62,10 @@ class SerializedKeyValueStore[K, V](
val keyBytes = toBytesOrNull(key, keySerde)
val valBytes = toBytesOrNull(value, msgSerde)
store.put(keyBytes, valBytes)
+ val keySizeBytes = if (keyBytes == null) 0 else keyBytes.length
val valSizeBytes = if (valBytes == null) 0 else valBytes.length
+ metrics.recordKeySizeBytes.update(keySizeBytes)
+ metrics.recordValueSizeBytes.update(valSizeBytes)
updatePutMetrics(1, valSizeBytes)
Review comment:
I see. We wouldn't be able to preserve the name if we emitted a maximum
metric from the histogram?
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