com.mapr.ojai.store.impl

Class OjaiOptions

java.lang.Object

com.mapr.ojai.store.impl.OjaiOptions

public final class OjaiOptions
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	OPTION_BUFFER_WRITES
static java.lang.String	OPTION_DRILL_PREFIX This is the prefix that can be used to specify any Drill option; just append the Drill option name to this.
static java.lang.String	OPTION_FORCE_DIRECT
static java.lang.String	OPTION_FORCE_DRILL
static java.lang.String	OPTION_FORCE_SORT
static java.lang.String	OPTION_ROW_TIME_TO_IO_RATIO This is meant to crudely capture the difference bewteen using SSDs vs HDDs.
static java.lang.String	OPTION_USE_INDEX

Constructor Summary

Constructors

Constructor and Description
OjaiOptions(org.ojai.Document options)

Method Summary

Modifier and Type	Method and Description
boolean	getBoolean(java.lang.String optionPath, boolean defaultValue)
java.lang.String	getString(java.lang.String optionPath, java.lang.String defaultValue)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

OPTION_FORCE_SORT

public static final java.lang.String OPTION_FORCE_SORT

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Constant Field Values

OPTION_FORCE_DRILL

public static final java.lang.String OPTION_FORCE_DRILL

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Constant Field Values

OPTION_FORCE_DIRECT

public static final java.lang.String OPTION_FORCE_DIRECT

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Constant Field Values

OPTION_BUFFER_WRITES

public static final java.lang.String OPTION_BUFFER_WRITES

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Constant Field Values

OPTION_USE_INDEX

public static final java.lang.String OPTION_USE_INDEX

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Constant Field Values

OPTION_ROW_TIME_TO_IO_RATIO

public static final java.lang.String OPTION_ROW_TIME_TO_IO_RATIO

This is meant to crudely capture the difference bewteen using SSDs vs HDDs. The notion is that the "i/o cost to cpu cost" ratio for SSDs is 1: it costs the same to process a row as to fetch it. For HDDs the fetch cost would be expected to be much higher. The type of this value is a double. The default value for this is 1.0, representing SSD. For HDD use, estimate how much more time it costs to fetch a record's tablet than it does to process that record (i.e. to parse it and evaluate any condition on it), and set this to that.

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Constant Field Values

OPTION_DRILL_PREFIX

public static final java.lang.String OPTION_DRILL_PREFIX

This is the prefix that can be used to specify any Drill option; just append the Drill option name to this.

See Also:

Constant Field Values

Constructor Detail

OjaiOptions

public OjaiOptions(org.ojai.Document options)

Method Detail

getBoolean

public boolean getBoolean(java.lang.String optionPath,
                          boolean defaultValue)

getString

public java.lang.String getString(java.lang.String optionPath,
                                  java.lang.String defaultValue)