Liu Shaohui created HBASE-13996:
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Summary: Add write sniffing in canary
Key: HBASE-13996
URL: https://issues.apache.org/jira/browse/HBASE-13996
Project: HBase
Issue Type: New Feature
Components: canary
Reporter: Liu Shaohui
Assignee: Liu Shaohui
Currently the canary tool only sniff the read operations, it's hard to finding
the problem in write path.
To support the write sniffing, we create a system table named '_canary_' in
the canary tool. And the tool will make sure that the region number is large
than the number of the regionserver and the regions will be distributed onto
all regionservers.
Periodically, the tool will put data to these regions to calculate the write
availability of HBase and send alerts if needed.
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