Consider adding a watchdog node next to region server
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Key: HBASE-2342
URL: https://issues.apache.org/jira/browse/HBASE-2342
Project: Hadoop HBase
Issue Type: New Feature
Components: regionserver
Reporter: Todd Lipcon
This idea has been bandied about a fair amount. The concept is to add a second
java process that runs next to each region server to act as a watchdog. Several
possible purposes:
- monitor the RS for liveness - if it exhibits Juliet syndrome ("appears dead")
then we kill it agressively to prevent it from coming back to life
- restart RS automatically in failure cases
- potentially move the entire ZK session to the watchdog to decouple node
liveness from the particular JVM liveness
Let's discuss in this JIRA.
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