[REEF-2059] Upgrade netty from 4.0 to 4.1

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: REEF Bridge, Wake

Environment

Reproducible on Ubuntu 19.10 with OpenJDK-8 and Netty 4.1.42.Final

Fork from https://github.com/motus/reef/tree/REEF-2057 to get the updated code (with unit tests failing)

• Assignee: Sergiy Matusevych
• Reporter: Sergiy Matusevych
• Created: 27/Jan/20 10:18
• Updated: 19/Feb/20 07:35
• Resolved: 19/Feb/20 07:35

Description

We need to update REEF dependencies to be in sync with Hadoop, Spark, and our own REEF gRPC bridge. For that, we have to upgrade Netty from 4.0.23.Final used in Wake, to 4.1.42.Final. Using the new version (or any other Netty 4.1) causes unit test failures in Wake. Two tests fail with Netty 4.1:

org.apache.reef.wake.test.remote.RemoteManagerTest.testRemoteManagerConnectionRetryTest:137 expected:<2> but was:<0>
org.apache.reef.wake.test.remote. RemoteManagerTest.testRemoteManagerConnectionRetryWithMultipleSenderTest:171 expected:<10> but was:<0>