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Liu Shaohui commented on HBASE-13199: ------------------------------------- [~mbertozzi] Thanks. Commit it tomorrow if no objection. > Some small improvements on canary tool > -------------------------------------- > > Key: HBASE-13199 > URL: https://issues.apache.org/jira/browse/HBASE-13199 > Project: HBase > Issue Type: Improvement > Affects Versions: 2.0.0 > Reporter: Liu Shaohui > Assignee: Liu Shaohui > Fix For: 2.0.0 > > Attachments: HBASE-13199-addendum-v2.diff, HBASE-13199-addendum.diff, > HBASE-13199-v1.diff, HBASE-13199-v2.diff, HBASE-13199-v3.diff, > HBASE-13199-v4.diff > > > 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. > - Select the region randomly when sniffing a regionserver. > - Make the sink class of canary configurable > [~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)