randomWrite mode of PerformanceEvaluation benchmark program writes only to a
small range of keys
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Key: HBASE-2127
URL: https://issues.apache.org/jira/browse/HBASE-2127
Project: Hadoop HBase
Issue Type: Bug
Components: test
Affects Versions: 0.20.2
Environment: not relevant
Reporter: Kannan Muthukkaruppan
Priority: Minor
"randomWrite" mode of PerformanceEvaluation (PE), with nclients > 1, does
random writes only within a small range rather than across all rows.
e.g, for:
./bin/hbase org.apache.hadoop.hbase.PerformanceEvaluation --nomapred
--rows=1000 randomWrite 10
[Note: As per convention in all modes of PE, --rows is the number of rows per
client]
So for the above, with # of clients set to 10, currently all clients generate
writes to keys in the 0..999 range instead of the 0..9999 range.
[Fix appears to be simple. Will provide a patch.]
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