org.apache.hudi.common.model

Enum WriteConcurrencyMode

java.lang.Object

java.lang.Enum<WriteConcurrencyMode>

org.apache.hudi.common.model.WriteConcurrencyMode

All Implemented Interfaces:

Serializable, Comparable<WriteConcurrencyMode>

@EnumDescription(value="Concurrency modes for write operations.")
public enum WriteConcurrencyMode
extends Enum<WriteConcurrencyMode>

Different concurrency modes for write operations.

Enum Constant Summary

Enum Constants

Enum Constant and Description
NON_BLOCKING_CONCURRENCY_CONTROL
OPTIMISTIC_CONCURRENCY_CONTROL
SINGLE_WRITER

Method Summary

Modifier and Type	Method and Description
boolean	isNonBlockingConcurrencyControl()
static boolean	isNonBlockingConcurrencyControl(String name)
boolean	isOptimisticConcurrencyControl()
boolean	supportsMultiWriter()
static boolean	supportsMultiWriter(String name)
static WriteConcurrencyMode	valueOf(String name) Returns the enum constant of this type with the specified name.
static WriteConcurrencyMode[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

SINGLE_WRITER

@EnumFieldDescription(value="Only one active writer to the table. Maximizes throughput.")
public static final WriteConcurrencyMode SINGLE_WRITER

OPTIMISTIC_CONCURRENCY_CONTROL

@EnumFieldDescription(value="Multiple writers can operate on the table with lazy conflict resolution using locks. This means that only one writer succeeds if multiple writers write to the same file group.")
public static final WriteConcurrencyMode OPTIMISTIC_CONCURRENCY_CONTROL

NON_BLOCKING_CONCURRENCY_CONTROL

@EnumFieldDescription(value="Multiple writers can operate on the table with non-blocking conflict resolution. The writers can write into the same file group with the conflicts resolved automatically by the query reader and the compactor.")
public static final WriteConcurrencyMode NON_BLOCKING_CONCURRENCY_CONTROL

Method Detail

values

public static WriteConcurrencyMode[] 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 (WriteConcurrencyMode c : WriteConcurrencyMode.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static WriteConcurrencyMode 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

supportsMultiWriter

public boolean supportsMultiWriter()

supportsMultiWriter

public static boolean supportsMultiWriter(String name)

isOptimisticConcurrencyControl

public boolean isOptimisticConcurrencyControl()

isNonBlockingConcurrencyControl

public boolean isNonBlockingConcurrencyControl()

isNonBlockingConcurrencyControl

public static boolean isNonBlockingConcurrencyControl(String name)