Liu Shaohui created HBASE-13199:
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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?
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