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https://issues.apache.org/jira/browse/HADOOP-10623?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gera Shegalov updated HADOOP-10623:
-----------------------------------
Attachment: HADOOP-10623.v02.patch
Added ability to load the config from
- an arbitrary filesystem (helps digesting job.xml from a staging submit dir)
- include only a certain key in the
> Provide a utility to be able inspect the config as seen by a hadoop client
> daemon
> ----------------------------------------------------------------------------------
>
> Key: HADOOP-10623
> URL: https://issues.apache.org/jira/browse/HADOOP-10623
> Project: Hadoop Common
> Issue Type: New Feature
> Reporter: Gera Shegalov
> Assignee: Gera Shegalov
> Attachments: HADOOP-10623.v01.patch, HADOOP-10623.v02.patch
>
>
> To ease debugging of config issues it is convenient to be able to generate a
> config as seen by the job client or a hadoop daemon
> {noformat}
> ]$ hadoop org.apache.hadoop.util.ConfigTool -help
> Usage: ConfigTool [ -xml | -json ] [ -loadDefaults ] [ resource1... ]
> if resource contains '/', load from local filesystem
> otherwise, load from the classpath
> Generic options supported are
> -conf <configuration file> specify an application configuration file
> -D <property=value> use value for given property
> -fs <local|namenode:port> specify a namenode
> -jt <local|jobtracker:port> specify a job tracker
> -files <comma separated list of files> specify comma separated files to be
> copied to the map reduce cluster
> -libjars <comma separated list of jars> specify comma separated jar files
> to include in the classpath.
> -archives <comma separated list of archives> specify comma separated
> archives to be unarchived on the compute machines.
> The general command line syntax is
> bin/hadoop command [genericOptions] [commandOptions]
> {noformat}
> {noformat}
> $ hadoop org.apache.hadoop.util.ConfigTool -Dmy.test.conf=val mapred-site.xml
> ./hadoop-dist/target/hadoop-3.0.0-SNAPSHOT/etc/hadoop/core-site.xml | python
> -mjson.tool
> {
> "properties": [
> {
> "isFinal": false,
> "key": "mapreduce.framework.name",
> "resource": "mapred-site.xml",
> "value": "yarn"
> },
> {
> "isFinal": false,
> "key": "mapreduce.client.genericoptionsparser.used",
> "resource": "programatically",
> "value": "true"
> },
> {
> "isFinal": false,
> "key": "my.test.conf",
> "resource": "from command line",
> "value": "val"
> },
> {
> "isFinal": false,
> "key": "from.file.key",
> "resource":
> "hadoop-dist/target/hadoop-3.0.0-SNAPSHOT/etc/hadoop/core-site.xml",
> "value": "from.file.val"
> },
> {
> "isFinal": false,
> "key": "mapreduce.shuffle.port",
> "resource": "mapred-site.xml",
> "value": "${my.mapreduce.shuffle.port}"
> }
> ]
> }
> {noformat}
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