farmmamba created MAPREDUCE-7462:
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Summary: Use thread pool to improve the speed of creating control
files in TestDFSIO
Key: MAPREDUCE-7462
URL: https://issues.apache.org/jira/browse/MAPREDUCE-7462
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: examples, test
Affects Versions: 3.3.6
Reporter: farmmamba
When we use TestDFSIO tool to test the throughouts of HDFS clusters, we found
it is so slow in the creating controll files stage.
After refering to the source code, we found that method createControlFile try
to create control files serially. It can be improved by using thread pool.
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