JinHyuk Kim created HBASE-29307:
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Summary: Add status command to hbase-daemon.sh for process state
checking
Key: HBASE-29307
URL: https://issues.apache.org/jira/browse/HBASE-29307
Project: HBase
Issue Type: Improvement
Reporter: JinHyuk Kim
Assignee: JinHyuk Kim
Currently, `hbase-daemon.sh` supports commands like `start`, `stop`, and
`restart`, but lacks a `status` command to check whether a given HBase
component (e.g., master or regionserver) is running.
As a result, operators and automation tools must rely on external utilities
such as `jps`, `ps`, or `lsof` to infer the process status — often parsing
command output manually, which can be error-prone or inconsistent across
environments.
This patch adds a `status` subcommand to `hbase-daemon.sh`.
h1. Benefits
* Enables easy integration with tools like Ansible, systemd, Kubernetes
probes, and custom scripts
* Makes health checking and restart logic simpler and more consistent
* Removes the need for workaround scripts involving `jps` or `ps -ef | grep
hbase`
* Aligns with standard behavior of other Unix-style service scripts
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