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Backport "Added patch for HDFS-17891 on Hadoop 3.4.2" #1484

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Merged
sbernauer merged 1 commit into from
May 19, 2026
Merged

Backport "Added patch for HDFS-17891 on Hadoop 3.4.2" #1484

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48 changes: 48 additions & 0 deletions ...p/stackable/patches/3.4.2/0009-HDFS-17891-fix-for-hostname-resolution-bug-with-data.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,48 @@
From cb5487dcd3e6e170014604478a3d8cef03285007 Mon Sep 17 00:00:00 2001
From: Jim Halfpenny <jim.halfpenny@stackable.tech>
Date: Mon, 16 Mar 2026 09:18:46 +0000
Subject: HDFS-17891 fix for hostname resolution bug with datanodes

---
.../hadoop/hdfs/server/blockmanagement/HostSet.java | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/HostSet.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/HostSet.java
index d12e5fbae1..3da753f1cb 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/HostSet.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/HostSet.java
@@ -18,10 +18,11 @@
package org.apache.hadoop.hdfs.server.blockmanagement;


-import org.apache.hadoop.util.Preconditions;
import org.apache.hadoop.thirdparty.com.google.common.collect.HashMultimap;
import org.apache.hadoop.thirdparty.com.google.common.collect.Multimap;
import org.apache.hadoop.thirdparty.com.google.common.collect.UnmodifiableIterator;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;

import java.net.InetAddress;
import java.net.InetSocketAddress;
@@ -38,6 +39,8 @@
* .getPort() || B.getPort() == 0.
*/
public class HostSet implements Iterable<InetSocketAddress> {
+ private static final Logger LOG = LoggerFactory.getLogger(HostSet.class);
+
// Host -> lists of ports
private final Multimap<InetAddress, Integer> addrs = HashMultimap.create();

@@ -72,7 +75,11 @@ int size() {
}

void add(InetSocketAddress addr) {
- Preconditions.checkArgument(!addr.isUnresolved());
+ LOG.debug("Adding address to HostSet: {}", addr);
+ if (addr.isUnresolved()) {
+ LOG.warn("Unresolved address not added to HostSet: {}", addr);
+ return;
+ }
addrs.put(addr.getAddress(), addr.getPort());
}

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