HDFS-15250. Setting `dfs.client.use.datanode.hostname` to true can crash the system because of unhandled UnresolvedAddressException. Contributed by Ctest.
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@ -27,6 +27,7 @@ import java.io.FileInputStream;
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import java.io.IOException;
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import java.lang.reflect.Constructor;
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import java.net.InetSocketAddress;
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import java.nio.channels.UnresolvedAddressException;
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import java.util.List;
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import com.google.common.io.ByteArrayDataOutput;
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@ -823,7 +824,7 @@ public class BlockReaderFactory implements ShortCircuitReplicaCreator {
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datanode);
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LOG.trace("nextTcpPeer: created newConnectedPeer {}", peer);
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return new BlockReaderPeer(peer, false);
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} catch (IOException e) {
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} catch (IOException | UnresolvedAddressException e) {
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LOG.trace("nextTcpPeer: failed to create newConnectedPeer connected to"
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+ "{}", datanode);
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throw e;
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