[MESOS-1203] Shade protobuf dependency in Mesos Java library

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.18.1
• Component/s: build
• Assignee: Unassigned
• Reporter: Patrick Wendell
• Created: 10/Apr/14 20:38
• Updated: 29/Apr/19 09:26
• Resolved: 12/May/14 19:02

Description

Mesos's Java library uses the protobuf library which is also used by Hadoop. Unfortunately the protobuf library does not provide binary compatiblity between minor versions (for code compiled against 2.4.1 and 2.5.0 cannot run together in a single JVM classlaoder) .

This makes use of Mesos via it's Java API, something that is required for Spark and I'm assuming other frameworks, fundamentally incompatible for certain Hadoop versions.

Mesos could shade this jar using the maven shade plug-in. Take a look at the Parquet project for an example of shading:

https://github.com/Parquet/parquet-format/blob/master/pom.xml#L140

Without this fix Java users won't be able to use Mesos (< 0.17) with newer versions of Hadoop. Or Mesos 0.17+ with older versions of Hadoop.

Issue Links

• blocks: SPARK-1433 Upgrade Mesos dependency to 0.17.0
• is related to: HBASE-15638 Shade protobuf
• is related to: MESOS-174 Upgrade protobuf dependency to version 2.4.1
• is related to: SPARK-12226 Docs for Mesos don't mention shaded protobuf version