H2O.OptArgs (h2o-core 3.42.0 API)

java.lang.Object
- water.H2O.BaseArgs
- - water.H2O.OptArgs

Enclosing class:

H2O
```
public static class H2O.OptArgs
extends H2O.BaseArgs
```
A class containing all of the arguments for H2O.

Field Summary

Fields
Modifier and Type	Field and Description
`boolean`	`allow_clients` -allow_clients, -allow_clients=true; Enable clients to connect to this H2O node - disabled by default
`boolean`	`allow_unsupported_java`
`java.lang.String`	`auto_recovery_dir` -auto_recovery_dir=hdfs://path/to/recovery; Where to store `Recoverable` job data
`java.lang.String`	`aws_credentials` -aws_credentials=aws_credentials; properties file for aws credentials
`boolean`	`cleaner` -cleaner; enable user-mode spilling of big data to disk in ice_root
`boolean`	`client` -client, -client=true; Client-only; no work; no homing of Keys (but can cache)
`long`	`clientDisconnectTimeout` Timeout specifying how long to wait before we check if the client has disconnected from this node
`boolean`	`configure_s3_using_s3a` -configure_s3_using_s3a; use S3A(FileSystem) to configure S3 client
`boolean`	`disable_flow` -disable_flow; disable access to H2O Flow, keep REST API interface available to clients
`boolean`	`disable_net` -disable_net; do not listen to incoming traffic and do not try to discover other nodes, for single node deployments
`boolean`	`disable_web` -disable_web; disable Jetty and REST API interface
`boolean`	`embedded` -embedded; when running embedded into another application (eg.
`ModelBuilder.BuilderVisibility`	`features_level` Optionally disable algorithms marked as beta or experimental.
`java.lang.String`	`flatfile` -flatfile=flatfile; Specify a list of cluster IP addresses
`java.lang.String`	`flow_dir` -flow_dir=/path/to/dir; directory to save flows in
`java.lang.String`	`ga_hadoop_ver` --ga_hadoop_ver=ga_hadoop_ver; Version string for Hadoop
`java.util.Properties`	`hadoop_properties` -Hkey=value; additional configuration to merge into the Hadoop Configuration
`java.lang.String[]`	`hdfs_config` -hdfs_config=hdfs_config; configuration file of the HDFS
`boolean`	`hdfs_skip` -hdfs_skip=hdfs_skip; used by Hadoop driver to not unpack and load any HDFS jar file at runtime.
`boolean`	`help` -help, -help=true; print help and exit
`java.lang.String`	`ice_root` -ice_root=ice_root; ice root directory; where temp files go
`java.lang.String`	`log_dir` -log_dir=/path/to/dir; directory to save logs in
`java.lang.String`	`log_level` -log_level=log_level; One of DEBUG, INFO, WARN, ERRR.
`java.lang.String`	`max_log_file_size` -max_log_file_size=max_log_file_size; Maximum size of log file.
`boolean`	`md5skip` -md5skip, -md5skip=true; test-only; Skip the MD5 Jar checksum; allows jars from different builds to mingle in the same cloud
`java.lang.String`	`name` -name=name; Set cloud name
`java.lang.String`	`notify_local` specifies a file to write when the node is up
`short`	`nthreads` -nthreads=nthreads; Max number of F/J threads in the low-priority batch queue
`double`	`off_heap_memory_ratio` what the is ratio of available off-heap memory to maximum JVM heap memory
`boolean`	`quiet` -quiet Enable quiet mode and avoid any prints to console, useful for client embedding
`boolean`	`random_udp_drop` -random_udp_drop, -random_udp_drop=true; test only, randomly drop udp incoming
`int`	`rest_api_ping_timeout` If this timeout is set to non 0 value, stop the cluster if there hasn't been any rest api request to leader node after the given timeout.
`static java.lang.String`	`SYSTEM_DEBUG_CORS`
`static java.lang.String`	`SYSTEM_PROP_PREFIX`
`boolean`	`version` -version, -version=true; print version and exit

Constructor Summary

Constructors
Constructor and Description

OptArgs()

Constructors
Constructor and Description
`OptArgs()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`launchedWithHadoopJar()` Whether this H2O instance was launched on hadoop (using 'hadoop jar h2odriver.jar') or not.
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - SYSTEM_PROP_PREFIX
```
public static final java.lang.String SYSTEM_PROP_PREFIX
```
    See Also:
    
    Constant Field Values
  - SYSTEM_DEBUG_CORS
```
public static final java.lang.String SYSTEM_DEBUG_CORS
```
    See Also:
    
    Constant Field Values
  - help
```
public boolean help
```
    -help, -help=true; print help and exit
  - version
```
public boolean version
```
    -version, -version=true; print version and exit
  - name
```
public java.lang.String name
```
    -name=name; Set cloud name
  - flatfile
```
public java.lang.String flatfile
```
    -flatfile=flatfile; Specify a list of cluster IP addresses
  - ice_root
```
public java.lang.String ice_root
```
    -ice_root=ice_root; ice root directory; where temp files go
  - cleaner
```
public boolean cleaner
```
    -cleaner; enable user-mode spilling of big data to disk in ice_root
  - nthreads
```
public short nthreads
```
    -nthreads=nthreads; Max number of F/J threads in the low-priority batch queue
  - log_dir
```
public java.lang.String log_dir
```
    -log_dir=/path/to/dir; directory to save logs in
  - flow_dir
```
public java.lang.String flow_dir
```
    -flow_dir=/path/to/dir; directory to save flows in
  - disable_web
```
public boolean disable_web
```
    -disable_web; disable Jetty and REST API interface
  - disable_net
```
public boolean disable_net
```
    -disable_net; do not listen to incoming traffic and do not try to discover other nodes, for single node deployments
  - disable_flow
```
public boolean disable_flow
```
    -disable_flow; disable access to H2O Flow, keep REST API interface available to clients
  - client
```
public boolean client
```
    -client, -client=true; Client-only; no work; no homing of Keys (but can cache)
  - allow_clients
```
public boolean allow_clients
```
    -allow_clients, -allow_clients=true; Enable clients to connect to this H2O node - disabled by default
  - allow_unsupported_java
```
public boolean allow_unsupported_java
```
  - rest_api_ping_timeout
```
public int rest_api_ping_timeout
```
    If this timeout is set to non 0 value, stop the cluster if there hasn't been any rest api request to leader node after the given timeout. Unit is milliseconds.
  - notify_local
```
public java.lang.String notify_local
```
    specifies a file to write when the node is up
  - off_heap_memory_ratio
```
public double off_heap_memory_ratio
```
    what the is ratio of available off-heap memory to maximum JVM heap memory
  - hdfs_config
```
public java.lang.String[] hdfs_config
```
    -hdfs_config=hdfs_config; configuration file of the HDFS
  - hdfs_skip
```
public boolean hdfs_skip
```
    -hdfs_skip=hdfs_skip; used by Hadoop driver to not unpack and load any HDFS jar file at runtime.
  - aws_credentials
```
public java.lang.String aws_credentials
```
    -aws_credentials=aws_credentials; properties file for aws credentials
  - configure_s3_using_s3a
```
public boolean configure_s3_using_s3a
```
    -configure_s3_using_s3a; use S3A(FileSystem) to configure S3 client
  - ga_hadoop_ver
```
public java.lang.String ga_hadoop_ver
```
    --ga_hadoop_ver=ga_hadoop_ver; Version string for Hadoop
  - hadoop_properties
```
public final java.util.Properties hadoop_properties
```
    -Hkey=value; additional configuration to merge into the Hadoop Configuration
  - auto_recovery_dir
```
public java.lang.String auto_recovery_dir
```
    -auto_recovery_dir=hdfs://path/to/recovery; Where to store Recoverable job data
  - log_level
```
public java.lang.String log_level
```
    -log_level=log_level; One of DEBUG, INFO, WARN, ERRR. Default is INFO.
  - max_log_file_size
```
public java.lang.String max_log_file_size
```
    -max_log_file_size=max_log_file_size; Maximum size of log file. The file is rolled over after a specified size has been reached.
  - random_udp_drop
```
public boolean random_udp_drop
```
    -random_udp_drop, -random_udp_drop=true; test only, randomly drop udp incoming
  - md5skip
```
public boolean md5skip
```
    -md5skip, -md5skip=true; test-only; Skip the MD5 Jar checksum; allows jars from different builds to mingle in the same cloud
  - quiet
```
public boolean quiet
```
    -quiet Enable quiet mode and avoid any prints to console, useful for client embedding
  - clientDisconnectTimeout
```
public long clientDisconnectTimeout
```
    Timeout specifying how long to wait before we check if the client has disconnected from this node
  - embedded
```
public boolean embedded
```
    -embedded; when running embedded into another application (eg. Sparkling Water) - enforce all threads to be daemon threads
  - features_level
```
public ModelBuilder.BuilderVisibility features_level
```
    Optionally disable algorithms marked as beta or experimental. Everything is on by default.
- Constructor Detail
  - OptArgs
```
public OptArgs()
```
- Method Detail
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - launchedWithHadoopJar
```
public boolean launchedWithHadoopJar()
```
    Whether this H2O instance was launched on hadoop (using 'hadoop jar h2odriver.jar') or not.

Class H2O.OptArgs

Field Summary

Fields inherited from class water.H2O.BaseArgs

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

SYSTEM_PROP_PREFIX

SYSTEM_DEBUG_CORS

help

version

name

flatfile

ice_root

cleaner

nthreads

log_dir

flow_dir

disable_web

disable_net

disable_flow

client

allow_clients

allow_unsupported_java

rest_api_ping_timeout

notify_local

off_heap_memory_ratio

hdfs_config

hdfs_skip

aws_credentials

configure_s3_using_s3a

ga_hadoop_ver

hadoop_properties

auto_recovery_dir

log_level

max_log_file_size

random_udp_drop

md5skip

quiet

clientDisconnectTimeout

embedded

features_level

Constructor Detail

OptArgs

Method Detail

toString

launchedWithHadoopJar