[ https://issues.apache.org/jira/browse/HBASE-20883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hari Sekhon updated HBASE-20883: -------------------------------- Summary: HMaster/RS Read / Write Requests Per Sec across RegionServers, currently only Total Requests Per Sec (was: HMaster Read / Write Requests Per Sec across RegionServers, currently only Total Requests Per Sec ) > HMaster/RS Read / Write Requests Per Sec across RegionServers, currently only > Total Requests Per Sec > ----------------------------------------------------------------------------------------------------- > > Key: HBASE-20883 > URL: https://issues.apache.org/jira/browse/HBASE-20883 > Project: HBase > Issue Type: Improvement > Components: Admin, master, metrics, monitoring, UI, Usability > Affects Versions: 1.1.2 > Reporter: Hari Sekhon > Priority: Major > > HMaster currently shows Requests Per Second per RegionServer under HMaster > UI's /master-status page -> Region Servers -> Base Stats section in the Web > UI. > Please add Reads Per Second and Writes Per Second per RegionServer alongside > this in the HMaster UI, and also expose the Read/Write/Total requests per sec > information in the HMaster JMX API. > This will make it easier to find read or write hotspotting on HBase as a > combined total will minimize and mask differences between RegionServers. For > example, we do 30,000 reads/sec but only 900 writes/sec to each RegionServer, > so write skew will be masked as it won't show enough significant difference > in the much larger combined Total Requests Per Second stat. > For now I've written a Python tool to calculate this info from RegionServers > JMX read/write/total request counts but since HMaster is collecting this info > anyway it shouldn't be a big change to improve it to also show Reads / Writes > Per Sec as well as Total. > Find my tools for more granular Read/Write Requests Per Sec Per Regionserver > and also Per Region at my [PyTools github > repo|https://github.com/harisekhon/pytools] along with a selection of other > HBase tools I've used for performance debugging over the years. -- This message was sent by Atlassian JIRA (v7.6.3#76005)