nkeywal created HBASE-6290:
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Summary: Add a function a mark a server as dead and start the
recovery the process
Key: HBASE-6290
URL: https://issues.apache.org/jira/browse/HBASE-6290
Project: HBase
Issue Type: Improvement
Components: monitoring
Affects Versions: 0.96.0
Reporter: nkeywal
Assignee: nkeywal
Priority: Minor
ZooKeeper is used a a monitoring tool: we use znode and we start the recovery
process when a znode is deleted by ZK because it got a timeout. This timeout is
defaulted to 90 seconds, and often set to 30s
However, some HW issues could be detected by specialized hw monitoring tools
before the ZK timeout. For this reason, it makes sense to offer a very simple
function to mark a RS as dead. This should not take in
It could be a hbase shell function such as
considerAsDead ipAddress|serverName
This would delete all the znodes of the server running on this box, starting
the recovery process.
Such a function would be easily callable (at callers risk) by any fault
detection tool... We could have issues to identify the right master & region
servers around ipv4 vs ipv6 vs and multi networked boxes however.
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