HA: Improvements for SBN web UI
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Key: HDFS-2830
URL: https://issues.apache.org/jira/browse/HDFS-2830
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ha, name-node
Affects Versions: HA branch (HDFS-1623)
Reporter: Todd Lipcon
A few improvements should be done to the NN web UI while it is in standby mode:
- Since the SBN doesn't compute replication queues, we shouldn't show
under-replicated/missing blocks or corrupt files
- In an edits dir that is open for read only, we should probably mark it as such
- We should include the latest txid reflected in the namespace, as well as
expose some of the HA-related metrics (eg queued block reports)
- We should include a link to the other NNs in the cluster, as well as the NN's
nameservice ID and namenode ID when available.
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