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From a.@apache.org
Subject [27/31] hadoop git commit: HADOOP-13087. env var doc update for dynamic commands
Date Sun, 15 May 2016 14:51:07 GMT
HADOOP-13087. env var doc update for dynamic commands


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/67b20dc1
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/67b20dc1
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/67b20dc1

Branch: refs/heads/HADOOP-12930
Commit: 67b20dc1e9a31a016ad5f98be50c5e0061797dd3
Parents: 9b7053d
Author: Allen Wittenauer <aw@apache.org>
Authored: Wed May 4 10:53:25 2016 -0700
Committer: Allen Wittenauer <aw@apache.org>
Committed: Sun May 15 07:50:15 2016 -0700

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 .../src/site/markdown/UnixShellGuide.md         | 22 ++++++++++++++++++++
 1 file changed, 22 insertions(+)
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http://git-wip-us.apache.org/repos/asf/hadoop/blob/67b20dc1/hadoop-common-project/hadoop-common/src/site/markdown/UnixShellGuide.md
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diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/UnixShellGuide.md b/hadoop-common-project/hadoop-common/src/site/markdown/UnixShellGuide.md
index 668a744..a459012 100644
--- a/hadoop-common-project/hadoop-common/src/site/markdown/UnixShellGuide.md
+++ b/hadoop-common-project/hadoop-common/src/site/markdown/UnixShellGuide.md
@@ -154,3 +154,25 @@ function hdfs_subcommand_fetchdt
 ```
 
 ... will replace the existing `hdfs fetchdt` subcommand with a custom one.
+
+Some key environment variables related to Dynamic Subcommands:
+
+* HADOOP\_CLASSNAME
+
+This is the name of the Java class to execute.
+
+* HADOOP\_SHELL\_EXECNAME
+
+This is the name of the script that is being executed.  It will be one of hadoop, hdfs, mapred,
or yarn.
+
+* HADOOP\_SUBCMD\_SECURESERVICE
+
+If this command should/will be executed as a secure daemon, set this to true.
+
+* HADOOP\_SUBCMD\_SECUREUSER
+
+If this command should/will be executed as a secure daemon, set the user name to be used.
+
+* HADOOP\_SUBCMD\_SUPPORTDAEMONIZATION
+
+If this command can be executed as a daemon, set this to true.


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