[jira] [Created] (HBASE-8481) Add cost tracking to API calls for resource management

["Lars George (JIRA)" <ji...@apache.org>]

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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