Yu Li created HBASE-18131:
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Summary: Add an hbase shell command to clear deadserver list in
ServerManager
Key: HBASE-18131
URL: https://issues.apache.org/jira/browse/HBASE-18131
Project: HBase
Issue Type: New Feature
Components: Operability
Reporter: Yu Li
Assignee: Yu Li
Currently if a regionserver is aborted due to fatal error or stopped by
operator on purpose, it will be added into {{ServerManager#deadservers}} list
and shown as "Dead Servers" in the master UI. This is a valid warn for
operators to notice the self-aborted servers and give a sanity check to avoid
further issues. However, after necessary checks, even if operator is sure that
the node is decommissioned (such as for repair), there's no way to clear the
dead server list except restarting master. See more details in [this
discussion|http://mail-archives.apache.org/mod_mbox/hbase-user/201705.mbox/%3CCAM7-19%2BD4MLu2b1R94%2BtWQDspjfny2sCy4Qit8JtCgjvTOZzzg%40mail.gmail.com%3E]
in mail list
Here we propose to add a hbase shell command to allow clearing dead server list
in {{ServerManager}} for advanced users, and the command should be executed
with caution.
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