[ https://issues.apache.org/jira/browse/HDFS-16443?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Akira Ajisaka resolved HDFS-16443. ---------------------------------- Fix Version/s: 3.2.4 Resolution: Fixed Backported to branch-3.2. > Fix edge case where DatanodeAdminDefaultMonitor doubly enqueues a > DatanodeDescriptor on exception > ------------------------------------------------------------------------------------------------- > > Key: HDFS-16443 > URL: https://issues.apache.org/jira/browse/HDFS-16443 > Project: Hadoop HDFS > Issue Type: Bug > Components: hdfs > Reporter: Kevin Wikant > Assignee: Kevin Wikant > Priority: Major > Labels: pull-request-available > Fix For: 3.4.0, 3.2.4, 3.3.3 > > Time Spent: 40m > Remaining Estimate: 0h > > As part of the fix merged in: https://issues.apache.org/jira/browse/HDFS-16303 > There was a rare edge case noticed in DatanodeAdminDefaultMonitor which > causes a DatanodeDescriptor to be added twice to the pendingNodes queue. > * a [datanode is unhealthy so it gets added to > "unhealthyDns"]([https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminDefaultMonitor.java#L227)] > * an exception is thrown which causes [this catch > block](https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminDefaultMonitor.java#L271) > to execute > * the [datanode is added to > "pendingNodes"]([https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminDefaultMonitor.java#L276)] > * under certain conditions the [datanode can be added again from > "unhealthyDns" to "pendingNodes" > here]([https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminDefaultMonitor.java#L296)] > This Jira is to track the 1 line fix for this bug -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org