configuration: Managing the Hadoop configuration
In hive: Hadoop InteractiVE

Description Usage Arguments Details Value Author(s) References Examples

Functions for showing/changing Hadoop configuration.

hive_get_parameter( x, henv = hive() )
hive_get_masters( henv = hive() )
hive_get_slaves( henv = hive() )
hive_get_nreducer( henv = hive() )
hive_set_nreducer( n, henv = hive() )

`henv`	An object containing the local Hadoop configuration.
`x`	A character string naming the parameter in the Hadoop configuration.
`n`	An integer specifying the number of reducers to be used in `hive_stream()`.

The function hive_get_parameter() is used to get parameters from the Hadoop cluster configuration.

The functions hive_get_slaves() and hive_get_masters() return the hostnames of the configured nodes in the cluster.

The functions hive_get_nreducer() and hive_set_nreducer() are used to get/set the number of reducers which are used in Hadoop Streaming using hive_stream().

hive_get_parameter() returns the specified parameter as a character string.

hive_get_slaves() returns a character vector naming the hostnames of the configured worker nodes in the cluster.

hive_get_masters() returns a character vector of the hostnames of the configured master nodes in the cluster.

hive_get_nreducer() returns an integer representing the number of configured reducers.

Stefan Theussl

Apache Hadoop cluster configuration (https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/ClusterSetup.html#Configuring_Hadoop_in_Non-Secure_Mode).

## Which tmp directory is set in the Hadoop configuration?
## Not run: hive_get_parameter("hadoop.tmp.dir")

## The master nodes of the cluster
## Not run: hive_get_masters()

## The worker nodes of the cluster
## Not run: hive_get_slaves()

## The number of configured reducers
## Not run: hive_get_nreducer()