Chen Liang created HDFS-11923:
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Summary: Stress test of DFSNetworkTopology
Key: HDFS-11923
URL: https://issues.apache.org/jira/browse/HDFS-11923
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Chen Liang
Assignee: Chen Liang
I wrote a stress test with {{DFSNetworkTopology}} to verify its correctness
under huge number of datanode changes e.g., data node insert/delete, storage
addition/removal etc. The goal is to show that the topology maintains the
correct counters all time. The test is written that, unless manually
terminated, it will keep randomly performing the operations nonstop. (and
because of this, the test is ignored in the patch).
My local test lasted 40 min before I stopped it, it involved more than one
million datanode changes, and no error happened. We believe this should be
sufficient to show the correctness of {{DFSNetworkTopology}}
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