Package org.apache.ignite.configuration
Enum CheckpointWriteOrder
- java.lang.Object
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- java.lang.Enum<CheckpointWriteOrder>
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- org.apache.ignite.configuration.CheckpointWriteOrder
 
 
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- All Implemented Interfaces:
- Serializable,- Comparable<CheckpointWriteOrder>
 
 public enum CheckpointWriteOrder extends Enum<CheckpointWriteOrder> This enum defines order of writing pages to disk storage during checkpoint.
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Enum Constant SummaryEnum Constants Enum Constant Description RANDOMPages are written in order provided by checkpoint pages collection iterator (which is basically a hashtable).SEQUENTIALAll checkpoint pages are collected into single list and sorted by page index.
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Method SummaryAll Methods Static Methods Concrete Methods Modifier and Type Method Description static @Nullable CheckpointWriteOrderfromOrdinal(int ord)Efficiently gets enumerated value from its ordinal.static CheckpointWriteOrdervalueOf(String name)Returns the enum constant of this type with the specified name.static CheckpointWriteOrder[]values()Returns an array containing the constants of this enum type, in the order they are declared.
 
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Enum Constant Detail- 
RANDOMpublic static final CheckpointWriteOrder RANDOM Pages are written in order provided by checkpoint pages collection iterator (which is basically a hashtable).
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SEQUENTIALpublic static final CheckpointWriteOrder SEQUENTIAL All checkpoint pages are collected into single list and sorted by page index. Provides almost sequential disk writes, which can be much faster on some SSD models.
 
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Method Detail- 
valuespublic static CheckpointWriteOrder[] values() Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (CheckpointWriteOrder c : CheckpointWriteOrder.values()) System.out.println(c); - Returns:
- an array containing the constants of this enum type, in the order they are declared
 
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valueOfpublic static CheckpointWriteOrder valueOf(String name) Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)- Parameters:
- name- the name of the enum constant to be returned.
- Returns:
- the enum constant with the specified name
- Throws:
- IllegalArgumentException- if this enum type has no constant with the specified name
- NullPointerException- if the argument is null
 
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fromOrdinal@Nullable public static @Nullable CheckpointWriteOrder fromOrdinal(int ord) Efficiently gets enumerated value from its ordinal.- Parameters:
- ord- Ordinal value.
- Returns:
- Enumerated value or nullif ordinal out of range.
 
 
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