Liu Shaohui created HBASE-13199: ----------------------------------- Summary: Some small improvements on canary tool Key: HBASE-13199 URL: https://issues.apache.org/jira/browse/HBASE-13199 Project: HBase Issue Type: Improvement Reporter: Liu Shaohui Assignee: Liu Shaohui
Improvements - Make the sniff of region and regionserver parallel to support large cluster with 10000+ region and 500+ regionservers using thread pool. - Set cacheblock to false in get and scan to avoid influence to block cache. - Add FirstKeyOnlyFilter to get and scan to avoid read and translate too many data from HBase. There may be many column under a column family in a flat-wide table. - random select the region when sniffing a regionserver. [~stack] Suggestions are welcomed. Thanks~ Another question is that why to check each column family with separate requests when sniffing a region? Can we just check a column family of a region? -- This message was sent by Atlassian JIRA (v6.3.4#6332)