Github user joshelser commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/220#discussion_r102823576
--- Diff:
server/master/src/main/java/org/apache/accumulo/master/metrics/Metrics2ReplicationMetrics.java
---
@@ -58,6 +59,7 @@ protected void snapshot() {
registry.add(PENDING_FILES, getNumFilesPendingReplication());
registry.add(NUM_PEERS, getNumConfiguredPeers());
registry.add(MAX_REPLICATION_THREADS, getMaxReplicationThreads());
+ registry.add(LATENCY, getLatencyInSeconds());
--- End diff --
Oh, this is why I was confused. HBase has its own MutableHistogram metrics
classes.
https://github.com/apache/hbase/blob/bb3d9ccd489fb64e3cb2020583935a393382a678/hbase-hadoop2-compat/src/main/java/org/apache/hadoop/metrics2/lib/MutableTimeHistogram.java
https://github.com/apache/hbase/blob/bb3d9ccd489fb64e3cb2020583935a393382a678/hbase-hadoop2-compat/src/main/java/org/apache/hadoop/metrics2/lib/MutableSizeHistogram.java
https://github.com/apache/hbase/blob/c64a1d199402d6bf2d6ff4168c00c756dcaa59e4/hbase-hadoop2-compat/src/main/java/org/apache/hadoop/metrics2/lib/MutableHistogram.java
We could consider lifting these to make your life easier.
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