[FLINK-11154] Upgrade Netty to 4.1.32

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: shaded-6.0, 1.8.0
• Component/s: Build System, Runtime / Network
• Labels: pull-request-available
• Assignee: Nico Kruber
• Reporter: Nico Kruber
• Created: 13/Dec/18 15:04
• Updated: 15/Mar/19 11:50
• Resolved: 16/Feb/19 08:45

Description

Notable changes since 4.1.24 (currently used in Flink 1.6-1.7):

• big (performance, feature set) improvements for using openSSL based SSL engine (useful for FLINK-9816)
• allow multiple shaded versions of the same netty artifact (as long as the shaded prefix is different)
• Ensure ByteToMessageDecoder.Cumulator implementations always release.
• Don't re-arm timerfd each epoll_wait
• Use a non-volatile read for ensureAccessible() whenever possible to reduce overhead and allow better inlining.
• Do not fail on runtime when an older version of Log4J2 is on the classpath
• Fix leak and corruption bugs in CompositeByteBuf
• Add support for TLSv1.3
• Harden ref-counting concurrency semantics
• bug fixes
• Java 9-12 related fixes

Issue Links

• is related to: FLINK-9816 Support Netty configuration to enable an openSSL-based SslEngine
• links to: GitHub Pull Request #55
• links to: GitHub Pull Request #7445