Max Xie created HDFS-16242:
-------------------------------
Summary: JournalMetrics should add JournalId MetricTag to
distinguish different nameservice journal metrics.
Key: HDFS-16242
URL: https://issues.apache.org/jira/browse/HDFS-16242
Project: Hadoop HDFS
Issue Type: Improvement
Components: journal-node
Affects Versions: 3.4.0
Reporter: Max Xie
JournalMetrics should add JournalId MetricTag to distinguish different
nameservice journal metrics when JournalNode use ganglia sink or prometheus
sink.
*JMX*
Before this patch, journal' jmx :
{code:java}
// jmx json
{
"name" : "Hadoop:service=JournalNode,name=Journal-nntest1",
"Syncs60sNumOps" : 0,
...
},
{
"name" : "Hadoop:service=JournalNode,name=Journal-nntest2",
"Syncs60sNumOps" : 0,
...
}
{code}
After this patch, journal' jmx :
{code:java}
// jmx json
{
"name" : "Hadoop:service=JournalNode,name=Journal-nntest1",
"tag.JournalId" : "nntest1", // add this tag
"Syncs60sNumOps" : 0,
...
},
{
"name" : "Hadoop:service=JournalNode,name=Journal-nntest2",
"tag.JournalId" : "nntest2",
"Syncs60sNumOps" : 0,
...
}
{code}
*PrometheusSink*
Before this patch, journal' prometheus export :
{code:java}
journal_node_syncs60s_num_ops{context="dfs",hostname="host"} 2
{code}
After this patch, journal' prometheus export :
{code:java}
journal_node_syncs60s_num_ops{context="dfs",journalid="nntest2",hostname="host"}
2
journal_node_syncs60s_num_ops{context="dfs",journalid="nntest1",hostname="host"}
75
{code}
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