[ZOOKEEPER-829] Add /zookeeper/sessions/* to allow inspection/manipulation of client sessions

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: server
• Assignee: Marshall McMullen
• Reporter: Todd Lipcon
• Created: 29/Jul/10 17:25
• Updated: 13/Dec/12 08:09

Description

For some use cases in HBase (HBASE-1316 in particular) we'd like the ability to forcible expire someone else's ZK session. Patrick and I discussed on IRC and came up with an idea of creating nodes in /zookeeper/sessions/<session id> that can be read in order to get basic stats about a session, and written in order to manipulate one. The manipulation we need in HBase is the ability to write a command like "kill", but others might be useful as well.

Issue Links

• is depended upon by: HBASE-1316 ZooKeeper: use native threads to avoid GC stalls (JNI integration)
• relates to: ZOOKEEPER-1587 Provide simple way to determine IP address of an ephemeral znode's owner