[HADOOP-11612] Workaround for Curator's ChildReaper requiring Guava 15+

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.7.0
• Target Version/s: 2.7.0
• Hadoop Flags: Reviewed
• Assignee: Robert Kanter
• Reporter: Robert Kanter
• Created: 19/Feb/15 00:34
• Updated: 28/May/15 02:21
• Resolved: 21/Feb/15 04:00

Description

HADOOP-11492 upped the Curator version to 2.7.1, which makes the ChildReaper class use a method that only exists in newer versions of Guava (we have 11.0.2, and it needs 15+). As a workaround, we can copy the ChildReaper class into hadoop-common and make a minor modification to allow it to work with Guava 11.

The ChildReaper is used by Curator to cleanup old lock znodes. Curator locks are needed by YARN-2942.

Issue Links

• is related to: HADOOP-10101 Update guava dependency to the latest version
• is related to: HADOOP-11616 Remove workaround for Curator's ChildReaper requiring Guava 15+
• relates to: HADOOP-11492 Bump up curator version to 2.7.1