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https://issues.apache.org/jira/browse/SPARK-19552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16112973#comment-16112973
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Sean Owen commented on SPARK-19552:
-----------------------------------
You will still have to make Spark work with 4.1.x even if it's shaded, but
you're welcome to do that. I think the linked PR above did that, and may still
accomplish the necessary changes. We'd have to figure out whether it breaks any
user code too. But yeah shading is probably the way to go, as with jetty.
> Upgrade Netty version to 4.1.8 final
> ------------------------------------
>
> Key: SPARK-19552
> URL: https://issues.apache.org/jira/browse/SPARK-19552
> Project: Spark
> Issue Type: Improvement
> Components: Build
> Affects Versions: 2.1.0
> Reporter: Adam Roberts
> Priority: Minor
>
> Netty 4.1.8 was recently released but isn't API compatible with previous
> major versions (like Netty 4.0.x), see
> http://netty.io/news/2017/01/30/4-0-44-Final-4-1-8-Final.html for details.
> This version does include a fix for a security concern but not one we'd be
> exposed to with Spark "out of the box". Let's upgrade the version we use to
> be on the safe side as the security fix I'm especially interested in is not
> available in the 4.0.x release line.
> We should move up anyway to take on a bunch of other big fixes cited in the
> release notes (and if anyone were to use Spark with netty and tcnative, they
> shouldn't be exposed to the security problem) - we should be good citizens
> and make this change.
> As this 4.1 version involves API changes we'll need to implement a few
> methods and possibly adjust the Sasl tests. This JIRA and associated pull
> request starts the process which I'll work on - and any help would be much
> appreciated! Currently I know:
> {code}
> @Override
> public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise
> promise)
> throws Exception {
> if (!foundEncryptionHandler) {
> foundEncryptionHandler =
> ctx.channel().pipeline().get(encryptHandlerName) != null; <-- this
> returns false and causes test failures
> }
> ctx.write(msg, promise);
> }
> {code}
> Here's what changes will be required (at least):
> {code}
> common/network-common/src/main/java/org/apache/spark/network/crypto/TransportCipher.java{code}
> requires touch, retain and transferred methods
> {code}
> common/network-common/src/main/java/org/apache/spark/network/sasl/SaslEncryption.java{code}
> requires the above methods too
> {code}common/network-common/src/test/java/org/apache/spark/network/protocol/MessageWithHeaderSuite.java{code}
> With "dummy" implementations so we can at least compile and test, we'll see
> five new test failures to address.
> These are
> {code}
> org.apache.spark.network.sasl.SparkSaslSuite.testFileRegionEncryption
> org.apache.spark.network.sasl.SparkSaslSuite.testSaslEncryption
> org.apache.spark.network.shuffle.ExternalShuffleSecuritySuite.testEncryption
> org.apache.spark.rpc.netty.NettyRpcEnvSuite.send with SASL encryption
> org.apache.spark.rpc.netty.NettyRpcEnvSuite.ask with SASL encryption
> {code}
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