Xiaoyu Yao created HDFS-11860:
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Summary: Ozone: SCM: SCMContainerPlacementCapacity#chooseNode
chosen node is not removed from healthy list.
Key: HDFS-11860
URL: https://issues.apache.org/jira/browse/HDFS-11860
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ozone
Affects Versions: HDFS-7240
Reporter: Xiaoyu Yao
Assignee: Xiaoyu Yao
This was caught in Jenkins run. After debugging, found the cause is the
logic below where the node was returned without being removed from the healthy
list for next round. As a result, there could be duplicated datanodes chosen
with pipeline size smaller than expected. I will post a fix soon.
{code}
SCMContainerPlacementCapacity#chooseNode
// There is a possibility that both numbers will be same.
// if that is so, we just return the node.
if (firstNodeNdx == secondNodeNdx) {
return healthyNodes.get(firstNodeNdx);
}
{code}
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