Chris Trezzo created HDFS-9922:
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Summary: Upgrade Domain placement policy status marks a good block
in violation when there are decommissioned nodes
Key: HDFS-9922
URL: https://issues.apache.org/jira/browse/HDFS-9922
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Chris Trezzo
Assignee: Chris Trezzo
Priority: Minor
When there are replicas of a block on a decommissioned node,
BlockPlacementStatusWithUpgradeDomain#isUpgradeDomainPolicySatisfied returns
false when it should return true. This is because numberOfReplicas is the
number of in-service replicas for the block and upgradeDomains.size() is the
number of upgrade domains across all replicas of the block. Specifically, we
hit this scenario when numberOfReplicas is equal to upgradeDomainFactor and
upgradeDomains.size() is greater than numberOfReplicas.
{code}
private boolean isUpgradeDomainPolicySatisfied() {
if (numberOfReplicas <= upgradeDomainFactor) {
return (numberOfReplicas == upgradeDomains.size());
} else {
return upgradeDomains.size() >= upgradeDomainFactor;
}
}
{code}
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