[HBASE-5434] [REST] Include more metrics in cluster status request

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.94.0
• Fix Version/s: 0.94.0, 0.95.0
• Component/s: metrics, REST
• Hadoop Flags: Reviewed
• Assignee: Mubarak Seyed
• Reporter: Mubarak Seyed
• Created: 19/Feb/12 02:05
• Updated: 05/Aug/14 20:11
• Resolved: 24/Mar/12 21:05

Description

/status/cluster shows only

stores=2
storefiless=0
storefileSizeMB=0
memstoreSizeMB=0
storefileIndexSizeMB=0

for a region but master web-ui shows

stores=1,
storefiles=0,
storefileUncompressedSizeMB=0
storefileSizeMB=0
memstoreSizeMB=0
storefileIndexSizeMB=0
readRequestsCount=0
writeRequestsCount=0
rootIndexSizeKB=0
totalStaticIndexSizeKB=0
totalStaticBloomSizeKB=0
totalCompactingKVs=0
currentCompactedKVs=0
compactionProgressPct=NaN

In a write-heavy REST gateway based production environment, ops team needs to verify whether write counters are getting incremented per region (they do run /status/cluster on each REST server), we can get the same values from rpc.metrics.put_num_ops and hbase.regionserver.writeRequestsCount but some home-grown tools needs to parse the output of /status/cluster and updates the dashboard.