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jar

Name of the jar file for Map Reduce to use.

Required

None

class

Name of the class for Map Reduce to use.

Required

None

libjars

Comma separated jar files to include in the classpath.

Optional

None

files

Comma separated files to be copied to the map reduce cluster.

Optional

None

arg

Set a program argument.

Optional

None

define

Set a Hadoop configuration variable using the syntax define=NAME=VALUE

Optional

None

statusdir

A directory where WebHCat will write the status of the Map Reduce job. If provided, it is the caller's responsibility to remove this directory when done.

Optional

None

callback

Define a URL to be called upon job completion. You may embed a specific job ID into this URL using $jobId. This tag will be replaced in the callback URL with this job's job ID.

Optional

None

usehcatalog

Specify that the submitted job uses HCatalog and therefore needs to access the metastore, which requires additional steps for WebHCat to perform in a secure cluster. (See HIVE-5133.) This parameter will be introduced in Hive 0.13.0.
Also, if webhcat-site.xml defines the parameters templeton.hive.archive, templeton.hive.home and templeton.hcat.home then WebHCat will ship the Hive tar to the target node where the job runs. (See HIVE-5547.) This means that Hive doesn't need to be installed on every node in the Hadoop cluster. This is independent of security, but improves manageability.
The webhcat-site.xml parameters are documented in webhcat-default.xml.

Optional in Hive 0.13.0+

false