[jira] [Created] (HDFS-16061) DFTestUtil.waitReplication can produce false positives

["Ahmed Hussein (Jira)" <ji...@apache.org>]

Ahmed Hussein created HDFS-16061:
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             Summary: DFTestUtil.waitReplication can produce false positives
                 Key: HDFS-16061
                 URL: https://issues.apache.org/jira/browse/HDFS-16061
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: hdfs
            Reporter: Ahmed Hussein
            Assignee: Ahmed Hussein


While checking the intermittent failure in TestBalancerRPCDelay#testBalancerRPCDelayQpsDefault described in HDFS-15146, I found that the implementation of waitReplication is incorrect.
In the last iteration, when {{correctReplFactor}} is {{false}}, the thread sleeps for 1 second, then a {{TimeoutException}} is thrown without check whether the replication was complete in the last second.




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