LeonGao91 commented on a change in pull request #2738:
URL: https://github.com/apache/hadoop/pull/2738#discussion_r589230766
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File path:
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/mover/Mover.java
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@@ -649,6 +664,11 @@ static int run(Map<URI, List<Path>> namenodes,
Configuration conf)
Map<Long, Set<DatanodeInfo>> excludedPinnedBlocks = new HashMap<>();
LOG.info("namenodes = " + namenodes);
+ DefaultMetricsSystem.initialize("Mover");
Review comment:
We have it in the internal branch with similar implementation but it is
not in upstream yet.
Actually, there has been a JIRA long time ago for balancer metrics.
https://issues.apache.org/jira/browse/HDFS-10648
I can rebase our changes there as a different PR after this.
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