[HBASE-2534] Recursive deletes and misc improvements to ZKW

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.90.0
• Hadoop Flags: Reviewed
• Assignee: Jean-Daniel Cryans
• Reporter: Jean-Daniel Cryans
• Created: 11/May/10 22:13
• Updated: 20/Nov/15 12:42
• Resolved: 19/May/10 01:37

Description

For replication I needed to add a bunch of features to ZooKeeperWrapper in order to make it more usable. I'm adding:

• a way to make recursive deletes (sync, so it's slower than async)
• a way to scan a list of znodes and add a watch to each of them
• a way to write a znode and have the method either fail if it already exists or overwrite it
• ensureExists as a public method with javadoc (very useful)

Also adding some more javadoc here and there and a unit test for deletes.

Issue Links

• is required by: HBASE-2223 Handle 10min+ network partitions between clusters