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-rw-r--r--conf/metrics.properties.template1
1 files changed, 1 insertions, 0 deletions
diff --git a/conf/metrics.properties.template b/conf/metrics.properties.template
index 8a4f4e4833..aeb76c9b2f 100644
--- a/conf/metrics.properties.template
+++ b/conf/metrics.properties.template
@@ -93,6 +93,7 @@
# period 10 Poll period
# unit seconds Unit of the poll period
# ttl 1 TTL of messages sent by Ganglia
+# dmax 0 Lifetime in seconds of metrics (0 never expired)
# mode multicast Ganglia network mode ('unicast' or 'multicast')
# org.apache.spark.metrics.sink.JmxSink