[HADOOP-11492] Bump up curator version to 2.7.1

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.7.0
• Target Version/s: 2.7.0
• Hadoop Flags: Incompatible change, Reviewed

Release Note

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Apache Curator version change: Apache Hadoop has updated the version of Apache Curator used from 2.6.0 to 2.7.1. This change should be binary and source compatible for the majority of downstream users. Notable exceptions:

* Binary incompatible change: org.apache.curator.utils.PathUtils.validatePath(String) changed return types. Downstream users of this method will need to recompile.
* Source incompatible change: org.apache.curator.framework.recipes.shared.SharedCountReader added a method to its interface definition. Downstream users with custom implementations of this interface can continue without binary compatibility problems but will need to modify their source code to recompile.
* Source incompatible change: org.apache.curator.framework.recipes.shared.SharedValueReader added a method to its interface definition. Downstream users with custom implementations of this interface can continue without binary compatibility problems but will need to modify their source code to recompile.

Downstream users are reminded that while the Hadoop community will attempt to avoid egregious incompatible dependency changes, there is currently no policy around when Hadoop's exposed dependencies will change across versions (ref http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/Compatibility.html#Java_Classpath ).

• Assignee: Arun Suresh
• Reporter: Karthik Kambatla
• Created: 20/Jan/15 09:53
• Updated: 12/Feb/16 17:40
• Resolved: 04/Feb/15 22:04

Description

Curator 2.7.1 got released recently and contains CURATOR-111 that YARN-2716 requires.

PS: Filing a common JIRA so folks from other sub-projects also notice this change and shout out if there are any reservations.

Issue Links

• blocks: YARN-2716 Refactor ZKRMStateStore retry code with Apache Curator
• breaks: HADOOP-12425 Branch-2 pom has conflicting curator dependency declarations
• breaks: HADOOP-12230 hadoop-project declares duplicate, conflicting curator dependencies
• is related to: HADOOP-11102 Downgrade curator version to 2.4.1
• is related to: HADOOP-9991 Fix up Hadoop POMs, roll up JARs to latest versions
• is related to: HADOOP-11612 Workaround for Curator's ChildReaper requiring Guava 15+