Lars George created HBASE-8481:
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Summary: Add cost tracking to API calls for resource management
Key: HBASE-8481
URL: https://issues.apache.org/jira/browse/HBASE-8481
Project: HBase
Issue Type: New Feature
Reporter: Lars George
All calls that require resource should be tracked internally using a
lightweight mechanism, such as a simple counter record. The idea is to be able
to tell from calls how many resources they did require, for example a Get or
Scan, how much true I/O was used. This should then be exposed to the
Coprocessor context so that a plugin can make cost based decisions going
forward with other calls. The record should include custom tags that in the
preXYZ() calls can be used to for example tag a record with a user group and
therefore be able to aggregate the statistics and accounting for groups of
users.
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