[HBASE-25127] Enhance PerformanceEvaluation to profile meta replica performance. - ASF JIRA

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Three new commands are added to PE:

metaWrite, metaRandomRead and cleanMeta.

Usage example:
hbase pe --rows=100000 metaWrite 1
hbase pe --nomapreduce --rows=100000 metaRandomRead 32
hbase pe --rows=100000 cleanMeta 1

metaWrite and cleanMeta should be run with only 1 thread and the same number of rows so all the rows inserted will be cleaned up properly.

metaRandomRead can be run with multiple threads. The rows option should set to within the range of rows inserted by metaWrite

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Three new commands are added to PE: metaWrite, metaRandomRead and cleanMeta. Usage example: hbase pe --rows=100000 metaWrite 1 hbase pe --nomapreduce --rows=100000 metaRandomRead 32 hbase pe --rows=100000 cleanMeta 1 metaWrite and cleanMeta should be run with only 1 thread and the same number of rows so all the rows inserted will be cleaned up properly. metaRandomRead can be run with multiple threads. The rows option should set to within the range of rows inserted by metaWrite