FAQ
hadoop secondary name node dfs metrics should show 0 values
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Key: HADOOP-3686
URL: https://issues.apache.org/jira/browse/HADOOP-3686
Project: Hadoop Core
Issue Type: Bug
Components: dfs
Affects Versions: 0.17.0
Environment: Red Hat Enterprise Linux AS release 4 (Nahant Update 5)

Reporter: Eric Yang


Using FileContext to look at the dfs metrics:

dfs.FSNamesystem: hostName=gs301017.inktomisearch.com, sessionId=, BlocksTotal=90, CapacityRemainingGB=3375, CapacityTotalGB=3632, CapacityUsedGB=1, FilesTotal=175, PendingReplicationBlocks=0, ScheduledReplicationBlocks=0, TotalLoad=0, UnderReplicatedBlocks=1
dfs.FSNamesystem: hostName=gs301017.inktomisearch.com, sessionId=, BlocksTotal=90, CapacityRemainingGB=0, CapacityTotalGB=0, CapacityUsedGB=0, FilesTotal=175, PendingReplicationBlocks=0, ScheduledReplicationBlocks=0, TotalLoad=0, UnderReplicatedBlocks=0

Both primary name node and seconddary name nodes are sending out data. However, secondary name node should send 0 instead, since secondary name node is not really being used.

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postedJul 3, '08 at 12:15a
activeJul 3, '08 at 12:15a
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