Chen Liang created HDFS-15404:
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Summary: ShellCommandFencer should expose info about source
Key: HDFS-15404
URL: https://issues.apache.org/jira/browse/HDFS-15404
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Chen Liang
Assignee: Chen Liang
Currently the HA fencing logic in ShellCommandFencer exposes environment
variable about only the fencing target. i.e. the $target_* variables as
mentioned in this [document
page|https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html]).
But here only the fencing target variables are getting exposed. Sometimes it is
useful to expose info about the fencing source node. One use case is would
allow source and target node to identify themselves separately and run
different commands/scripts.
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