Chance Li created HBASE-19389: --------------------------------- Summary: 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
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)