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HDFS-16443. Fix edge case where DatanodeAdminDefaultMonitor doubly enqueues a DatanodeDescriptor on exception (#3942) 

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
(cherry picked from commit 089e06de21)
This commit is contained in:
KevinWikant 2022-01-30 23:04:32 -05:00 committed by Akira Ajisaka
parent 5e2eac6c41
commit 7171e2190e
1 changed files with 1 additions and 0 deletions
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminDefaultMonitor.java
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@ -275,6 +275,7 @@ public class DatanodeAdminDefaultMonitor extends DatanodeAdminMonitorBase
+ "{}.", dn, e);
getPendingNodes().add(dn);
toRemove.add(dn);
unhealthyDns.remove(dn);
} finally {
iterkey = dn;
}