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# 6 ORCH Library Reference

This chapter describes the function in the ORCH library. It contains the following sections:

- Functions in Alphabetical Order

- Functions by Category

## 6.1 Functions in Alphabetical Order

Use R help for the `ore` functions for Hive and the analytic functions:

    R> help("function_name")

There are no Help (Rd) files for `orch` functions. They are described in this chapter.

    as.ore
    as.ore.character
    as.ore.frame
    as.ore.integer
    as.ore.logical
    as.ore.numeric
    as.ore.vector
    hadoop.exec
    hadoop.run
    hdfs.attach
    hdfs.cd
    hdfs.cp
    hdfs.describe
    hdfs.download
    hdfs.exists
    hdfs.get
    hdfs.head
    hdfs.id
    hdfs.ls
    hdfs.mkdir
    hdfs.mv
    hdfs.parts
    hdfs.pull
    hdfs.push
    hdfs.put
    hdfs.pwd
    hdfs.rm
    hdfs.rmdir
    hdfs.root
    hdfs.sample
    hdfs.setroot
    hdfs.size
    hdfs.tail
    hdfs.upload
    is.hdfs.id
    is.ore
    is.ore.character
    is.ore.frame
    is.ore.integer
    is.ore.logical
    is.ore.numeric
    is.ore.vector
    ore.create
    ore.drop
    ore.get
    ore.pull
    ore.push
    ore.recode
    orch.connect
    orch.connected
    orch.dbcon
    orch.dbg.lasterr
    orch.dbg.off
    orch.dbg.on
    orch.dbg.output
    orch.dbinfo
    orch.disconnect
    orch.dryrun
    orch.evaluate
    orch.export
    orch.export.fit
    orch.keyval
    orch.keyvals
    orch.lm
    orch.lmf
    orch.neural
    orch.nmf
    orch.nmf.NMFalgo
    orch.pack
    orch.reconnect
    orch.temp.path
    orch.unpack
    orch.version
    predict.orch.lm
    print.orch.lm
    print.summary.orch.lm
    summary.orch.lm

## 6.2 Functions by Category

The functions are grouped into these categories:

- Making Connections

- Copying Data

- Exploring Files

- Writing MapReduce Functions

- Debugging Scripts

- Using Hive Data

- Writing Analytical Functions

### 6.2.1 Making Connections

    orch.connect
    orch.connected
    orch.dbcon
    orch.dbinfo
    orch.disconnect
    orch.reconnect

### 6.2.2 Copying Data

    hdfs.attach
    hdfs.cp
    hdfs.download
    hdfs.get
    hdfs.mv
    hdfs.pull
    hdfs.push
    hdfs.put
    hdfs.upload
    orch.export
    orch.pack
    orch.unpack

### 6.2.3 Exploring Files

    hdfs.cd
    hdfs.describe
    hdfs.exists
    hdfs.head
    hdfs.id
    hdfs.ls
    hdfs.mkdir
    hdfs.parts
    hdfs.pwd
    hdfs.rm
    hdfs.rmdir
    hdfs.root
    hdfs.sample
    hdfs.setroot
    hdfs.size
    hdfs.tail
    is.hdfs.id
    orch.temp.path

### 6.2.4 Writing MapReduce Functions

    hadoop.exec
    hadoop.run
    orch.dryrun
    orch.keyval
    orch.keyvals

### 6.2.5 Debugging Scripts

    orch.dbg.lasterr
    orch.dbg.off
    orch.dbg.on
    orch.dbg.output
    orch.version

### 6.2.6 Using Hive Data

See "ORE Functions for Hive"

### 6.2.7 Writing Analytical Functions

See "Analytic Functions in Oracle R Connector for Hadoop."