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From ayushsax...@apache.org
Subject [hadoop] branch branch-3.1 updated: HDFS-15250. Setting `dfs.client.use.datanode.hostname` to true can crash the system because of unhandled UnresolvedAddressException. Contributed by Ctest.
Date Sun, 10 May 2020 06:31:11 GMT
This is an automated email from the ASF dual-hosted git repository.

ayushsaxena pushed a commit to branch branch-3.1
in repository https://gitbox.apache.org/repos/asf/hadoop.git


The following commit(s) were added to refs/heads/branch-3.1 by this push:
     new 86c15b8  HDFS-15250. Setting `dfs.client.use.datanode.hostname` to true can crash
the system because of unhandled UnresolvedAddressException. Contributed by Ctest.
86c15b8 is described below

commit 86c15b8287462cfb21597a22882185bedabf72b1
Author: Ayush Saxena <ayushsaxena@apache.org>
AuthorDate: Sun May 10 11:43:04 2020 +0530

    HDFS-15250. Setting `dfs.client.use.datanode.hostname` to true can crash the system because
of unhandled UnresolvedAddressException. Contributed by Ctest.
---
 .../java/org/apache/hadoop/hdfs/client/impl/BlockReaderFactory.java    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/BlockReaderFactory.java
b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/BlockReaderFactory.java
index 0620f1d..b587aef 100644
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/BlockReaderFactory.java
+++ b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/BlockReaderFactory.java
@@ -27,6 +27,7 @@ import java.io.FileInputStream;
 import java.io.IOException;
 import java.lang.reflect.Constructor;
 import java.net.InetSocketAddress;
+import java.nio.channels.UnresolvedAddressException;
 import java.util.List;
 
 import com.google.common.io.ByteArrayDataOutput;
@@ -823,7 +824,7 @@ public class BlockReaderFactory implements ShortCircuitReplicaCreator
{
           datanode);
       LOG.trace("nextTcpPeer: created newConnectedPeer {}", peer);
       return new BlockReaderPeer(peer, false);
-    } catch (IOException e) {
+    } catch (IOException | UnresolvedAddressException e) {
       LOG.trace("nextTcpPeer: failed to create newConnectedPeer connected to"
           + "{}", datanode);
       throw e;


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