DynoInfraUtils (Apache Hadoop Dynamometer Cluster Simulator 3.4.1.200-dep-1000 API)

java.lang.Object
- org.apache.hadoop.tools.dynamometer.DynoInfraUtils

@Private
@Unstable
public final class DynoInfraUtils
extends java.lang.Object

A collection of utilities used by the Dynamometer infrastructure application.

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`APACHE_DOWNLOAD_MIRROR_DEFAULT`
`static java.lang.String`	`APACHE_DOWNLOAD_MIRROR_KEY`
`static float`	`DATANODE_LIVE_MIN_FRACTION_DEFAULT`
`static java.lang.String`	`DATANODE_LIVE_MIN_FRACTION_KEY`
`static java.lang.String`	`DYNO_CONF_PREFIX`
`static java.lang.String`	`DYNO_INFRA_PREFIX`
`static java.lang.String`	`FSNAMESYSTEM_JMX_QUERY`
`static java.lang.String`	`FSNAMESYSTEM_STATE_JMX_QUERY`
`static java.lang.String`	`HADOOP_TAR_FILENAME_FORMAT`
`static java.lang.String`	`JMX_BLOCKS_TOTAL`
`static java.lang.String`	`JMX_LIVE_NODE_COUNT`
`static java.lang.String`	`JMX_LIVE_NODES_LIST`
`static java.lang.String`	`JMX_MISSING_BLOCKS`
`static java.lang.String`	`JMX_UNDER_REPLICATED_BLOCKS`
`static float`	`MISSING_BLOCKS_MAX_FRACTION_DEFAULT`
`static java.lang.String`	`MISSING_BLOCKS_MAX_FRACTION_KEY`
`static java.lang.String`	`NAMENODE_INFO_JMX_QUERY`
`static java.lang.String`	`NAMENODE_STARTUP_PROGRESS_JMX_QUERY`
`static float`	`UNDERREPLICATED_BLOCKS_MAX_FRACTION_DEFAULT`
`static java.lang.String`	`UNDERREPLICATED_BLOCKS_MAX_FRACTION_KEY`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static java.io.File`	`fetchHadoopTarball(java.io.File destinationDir, java.lang.String version, org.apache.hadoop.conf.Configuration conf, org.slf4j.Logger log)`	If a file matching "hadoop-%s.tar.gz" and `version` is found in `destinationDir`, return its path.

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

- Field Detail
  - DYNO_CONF_PREFIX
```
public static final java.lang.String DYNO_CONF_PREFIX
```
    See Also:
    
    Constant Field Values
  - DYNO_INFRA_PREFIX
```
public static final java.lang.String DYNO_INFRA_PREFIX
```
    See Also:
    
    Constant Field Values
  - APACHE_DOWNLOAD_MIRROR_KEY
```
public static final java.lang.String APACHE_DOWNLOAD_MIRROR_KEY
```
    See Also:
    
    Constant Field Values
  - APACHE_DOWNLOAD_MIRROR_DEFAULT
```
public static final java.lang.String APACHE_DOWNLOAD_MIRROR_DEFAULT
```
    See Also:
    
    Constant Field Values
  - HADOOP_TAR_FILENAME_FORMAT
```
public static final java.lang.String HADOOP_TAR_FILENAME_FORMAT
```
    See Also:
    
    Constant Field Values
  - DATANODE_LIVE_MIN_FRACTION_KEY
```
public static final java.lang.String DATANODE_LIVE_MIN_FRACTION_KEY
```
    See Also:
    
    Constant Field Values
  - DATANODE_LIVE_MIN_FRACTION_DEFAULT
```
public static final float DATANODE_LIVE_MIN_FRACTION_DEFAULT
```
    See Also:
    
    Constant Field Values
  - MISSING_BLOCKS_MAX_FRACTION_KEY
```
public static final java.lang.String MISSING_BLOCKS_MAX_FRACTION_KEY
```
    See Also:
    
    Constant Field Values
  - MISSING_BLOCKS_MAX_FRACTION_DEFAULT
```
public static final float MISSING_BLOCKS_MAX_FRACTION_DEFAULT
```
    See Also:
    
    Constant Field Values
  - UNDERREPLICATED_BLOCKS_MAX_FRACTION_KEY
```
public static final java.lang.String UNDERREPLICATED_BLOCKS_MAX_FRACTION_KEY
```
    See Also:
    
    Constant Field Values
  - UNDERREPLICATED_BLOCKS_MAX_FRACTION_DEFAULT
```
public static final float UNDERREPLICATED_BLOCKS_MAX_FRACTION_DEFAULT
```
    See Also:
    
    Constant Field Values
  - NAMENODE_STARTUP_PROGRESS_JMX_QUERY
```
public static final java.lang.String NAMENODE_STARTUP_PROGRESS_JMX_QUERY
```
    See Also:
    
    Constant Field Values
  - FSNAMESYSTEM_JMX_QUERY
```
public static final java.lang.String FSNAMESYSTEM_JMX_QUERY
```
    See Also:
    
    Constant Field Values
  - FSNAMESYSTEM_STATE_JMX_QUERY
```
public static final java.lang.String FSNAMESYSTEM_STATE_JMX_QUERY
```
    See Also:
    
    Constant Field Values
  - NAMENODE_INFO_JMX_QUERY
```
public static final java.lang.String NAMENODE_INFO_JMX_QUERY
```
    See Also:
    
    Constant Field Values
  - JMX_MISSING_BLOCKS
```
public static final java.lang.String JMX_MISSING_BLOCKS
```
    See Also:
    
    Constant Field Values
  - JMX_UNDER_REPLICATED_BLOCKS
```
public static final java.lang.String JMX_UNDER_REPLICATED_BLOCKS
```
    See Also:
    
    Constant Field Values
  - JMX_BLOCKS_TOTAL
```
public static final java.lang.String JMX_BLOCKS_TOTAL
```
    See Also:
    
    Constant Field Values
  - JMX_LIVE_NODE_COUNT
```
public static final java.lang.String JMX_LIVE_NODE_COUNT
```
    See Also:
    
    Constant Field Values
  - JMX_LIVE_NODES_LIST
```
public static final java.lang.String JMX_LIVE_NODES_LIST
```
    See Also:
    
    Constant Field Values
- Method Detail
  - fetchHadoopTarball
```
public static java.io.File fetchHadoopTarball(java.io.File destinationDir,
                                              java.lang.String version,
                                              org.apache.hadoop.conf.Configuration conf,
                                              org.slf4j.Logger log)
                                       throws java.io.IOException
```
    If a file matching "hadoop-%s.tar.gz" and version is found in destinationDir, return its path. Otherwise, first download the tarball from an Apache mirror. If the "dyno.apache-mirror" configuration or system property (checked in that order) is set, use that as the mirror; else use "http://mirrors.ocf.berkeley.edu/apache/".
    
    Parameters:
    
    destinationDir - destination directory to save a tarball
    
    version - The version of Hadoop to download, like "2.7.4" or "3.0.0-beta1"
    
    conf - configuration
    
    log - logger instance
    
    Returns:
    
    The path to the tarball.
    
    Throws:
    
    java.io.IOException - on failure

Class DynoInfraUtils

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DYNO_CONF_PREFIX

DYNO_INFRA_PREFIX

APACHE_DOWNLOAD_MIRROR_KEY

APACHE_DOWNLOAD_MIRROR_DEFAULT

HADOOP_TAR_FILENAME_FORMAT

DATANODE_LIVE_MIN_FRACTION_KEY

DATANODE_LIVE_MIN_FRACTION_DEFAULT

MISSING_BLOCKS_MAX_FRACTION_KEY

MISSING_BLOCKS_MAX_FRACTION_DEFAULT

UNDERREPLICATED_BLOCKS_MAX_FRACTION_KEY

UNDERREPLICATED_BLOCKS_MAX_FRACTION_DEFAULT

NAMENODE_STARTUP_PROGRESS_JMX_QUERY

FSNAMESYSTEM_JMX_QUERY

FSNAMESYSTEM_STATE_JMX_QUERY

NAMENODE_INFO_JMX_QUERY

JMX_MISSING_BLOCKS

JMX_UNDER_REPLICATED_BLOCKS

JMX_BLOCKS_TOTAL

JMX_LIVE_NODE_COUNT

JMX_LIVE_NODES_LIST

Method Detail

fetchHadoopTarball