[HBASE-18814] Make ScanMetrics enabled and add counter <HBase Counters, ROWS_SCANNED> into the MapReduce Job over snapshot

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha-2
• Fix Version/s: 1.4.0, 2.0.0-beta-1, 2.0.0
• Component/s: mapreduce
• Assignee: xinxin fan
• Reporter: xinxin fan
• Created: 14/Sep/17 01:57
• Updated: 21/Mar/18 22:20
• Resolved: 03/Oct/17 01:35

Description

Now the default counters of mapreduce over snapshot does not contain the HBase Counters as the scan metrics not set enabled. It's necessary to display the HBase Counters , especially the ROWS_SCANNED counter.