[ https://issues.apache.org/jira/browse/HBASE-19389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chance Li updated HBASE-19389: ------------------------------ Attachment: metrics-1.png > RS's handlers are all busy when writing many columns (more than 1000 columns) > ------------------------------------------------------------------------------ > > Key: HBASE-19389 > URL: https://issues.apache.org/jira/browse/HBASE-19389 > Project: HBase > Issue Type: Improvement > Components: hbase > Affects Versions: 2.0.0 > Environment: 2000+ Region Servers > PCI-E ssd > Reporter: Chance Li > Assignee: Chance Li > Priority: Minor > Fix For: 2.0.0, 3.0.0 > > Attachments: CSLM-concurrent-write.png, metrics-1.png, ycsb-result.png > > > In a large cluster, with a large number of clients, we found the RS's > handlers are all busy sometimes. And after investigation we found the root > cause is about CSLM, such as compare function heavy load. We reviewed the > related WALs, and found that there were many columns (more than 1000 columns) > were writing at that time. -- This message was sent by Atlassian JIRA (v6.4.14#64029)