HBase性能测试，
hbase org.apache.hadoop.hbase.PerformanceEvaluation
Usage: java org.apache.hadoop.hbase.PerformanceEvaluation \
[--miniCluster] [--nomapred] [--rows=ROWS] <command> <nclients>
Options:
miniCluster Run the test on an HBaseMiniCluster
nomapred Run multiple clients using threads (rather than use mapreduce)
rows Rows each client runs. Default: One million
flushCommits Used to determineifthe test should flush the table. Default:false
writeToWAL Set writeToWAL on puts. Default: True
Command:
filterScan Run scan test using a filter to find a specific row based on it's value (make sure to use --rows=20)
randomRead Run random read test
randomSeekScan Run random seek and scan100test
randomWrite Run random write test
scan Run scan test (read every row)
scanRange10 Run random seek scan with both start and stop row (max10rows)
scanRange100 Run random seek scan with both start and stop row (max100rows)
scanRange1000 Run random seek scan with both start and stop row (max1000rows)
scanRange10000 Run random seek scan with both start and stop row (max10000rows)
sequentialRead Run sequential read test
sequentialWrite Run sequential write test
Args:
nclients Integer. Required. Total number of clients (and HRegionServers)
running:1<= value <=500
Examples:
To run a single evaluation client:
$ bin/hbase org.apache.hadoop.hbase.PerformanceEvaluation sequentialWrite1
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