[SPARK-18375][SPARK-18383][BUILD][CORE] Upgrade netty to 4.0.42.Final

## What changes were proposed in this pull request?

One of the important changes for 4.0.42.Final is "Support any FileRegion implementation when using epoll transport netty/netty#5825".
In 4.0.42.Final, `MessageWithHeader` can work properly when `spark.[shuffle|rpc].io.mode` is set to epoll

## How was this patch tested?

Existing tests

Author: Guoqiang Li <witgo@qq.com>

Closes #15830 from witgo/SPARK-18375_netty-4.0.42.

(cherry picked from commit bc41d997)
Signed-off-by: Sean Owen <sowen@cloudera.com>

core/src/main/scala/org/apache/spark/util/Utils.scala

@@ -39,6 +39,7 @@ import scala.reflect.ClassTag
 import scala.util.Try
 import scala.util.control.{ControlThrowable, NonFatal}
 
+import _root_.io.netty.channel.unix.Errors.NativeIoException
 import com.google.common.cache.{CacheBuilder, CacheLoader, LoadingCache}
 import com.google.common.io.{ByteStreams, Files => GFiles}
 import com.google.common.net.InetAddresses
@@ -2222,6 +2223,9 @@ private[spark] object Utils extends Logging {
         isBindCollision(e.getCause)
       case e: MultiException =>
         e.getThrowables.asScala.exists(isBindCollision)
+      case e: NativeIoException =>
+        (e.getMessage != null && e.getMessage.startsWith("bind() failed: ")) ||
+          isBindCollision(e.getCause)
       case e: Exception => isBindCollision(e.getCause)
       case _ => false
     }

dev/deps/spark-deps-hadoop-2.2

@@ -123,7 +123,7 @@ metrics-json-3.1.2.jar
 metrics-jvm-3.1.2.jar
 minlog-1.3.0.jar
 netty-3.8.0.Final.jar
-netty-all-4.0.41.Final.jar
+netty-all-4.0.42.Final.jar
 objenesis-2.1.jar
 opencsv-2.3.jar
 oro-2.0.8.jar

dev/deps/spark-deps-hadoop-2.3

@@ -130,7 +130,7 @@ metrics-jvm-3.1.2.jar
 minlog-1.3.0.jar
 mx4j-3.0.2.jar
 netty-3.8.0.Final.jar
-netty-all-4.0.41.Final.jar
+netty-all-4.0.42.Final.jar
 objenesis-2.1.jar
 opencsv-2.3.jar
 oro-2.0.8.jar

dev/deps/spark-deps-hadoop-2.4

@@ -130,7 +130,7 @@ metrics-jvm-3.1.2.jar
 minlog-1.3.0.jar
 mx4j-3.0.2.jar
 netty-3.8.0.Final.jar
-netty-all-4.0.41.Final.jar
+netty-all-4.0.42.Final.jar
 objenesis-2.1.jar
 opencsv-2.3.jar
 oro-2.0.8.jar

dev/deps/spark-deps-hadoop-2.6

@@ -138,7 +138,7 @@ metrics-jvm-3.1.2.jar
 minlog-1.3.0.jar
 mx4j-3.0.2.jar
 netty-3.8.0.Final.jar
-netty-all-4.0.41.Final.jar
+netty-all-4.0.42.Final.jar
 objenesis-2.1.jar
 opencsv-2.3.jar
 oro-2.0.8.jar

dev/deps/spark-deps-hadoop-2.7

@@ -139,7 +139,7 @@ metrics-jvm-3.1.2.jar
 minlog-1.3.0.jar
 mx4j-3.0.2.jar
 netty-3.8.0.Final.jar
-netty-all-4.0.41.Final.jar
+netty-all-4.0.42.Final.jar
 objenesis-2.1.jar
 opencsv-2.3.jar
 oro-2.0.8.jar

pom.xml

@@ -552,7 +552,7 @@
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-all</artifactId>
-        <version>4.0.41.Final</version>
+        <version>4.0.42.Final</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>