[REST] Include more metrics in cluster status request
-----------------------------------------------------
Key: HBASE-5434
URL: https://issues.apache.org/jira/browse/HBASE-5434
Project: HBase
Issue Type: Improvement
Components: metrics, rest
Affects Versions: 0.94.0
Reporter: Mubarak Seyed
Assignee: Mubarak Seyed
Priority: Minor
Fix For: 0.94.0
/status/cluster shows only
{code}
stores=2
storefiless=0
storefileSizeMB=0
memstoreSizeMB=0
storefileIndexSizeMB=0
{code}
for a region but master web-ui shows
{code}
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
{code}
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.
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