* HBASE-27088 IntegrationLoadTestCommonCrawl async load improvements
- Use an async client and work stealing executor for parallelism during loads.
- Remove the verification read retries, these are not that effective during
replication lag anyway.
- Increase max task attempts because S3 might throttle.
- Implement a side task that exercises Increments by extracting urls from
content and updating a cf that tracks referrer counts. These are not
validated at this time. It could be possible to log the increments, sum
them with a reducer, and then verify the total, but this is left as a
future exercise.
Signed-off-by: Viraj Jasani <vjasani@apache.org>
* Sum RPC time for writes (loader) and reads (verifier) and mutation bytes submitted. Expose as job counters.
* Fix an issue with completion chaining
* Pause loading if too many operations are in flight
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