@InterfaceAudience.Public public enum MemoryCompactionPolicy extends Enum<MemoryCompactionPolicy>
Enum Constant and Description |
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ADAPTIVE
Adaptive compaction adapts to the workload.
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BASIC
Basic policy applies optimizations which modify the index to a more compacted representation.
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EAGER
In addition to compacting the index representation as the basic policy, eager policy eliminates
duplication while the data is still in memory (much like the on-disk compaction does after the
data is flushed to disk).
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NONE
No memory compaction, when size threshold is exceeded data is flushed to disk
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Modifier and Type | Method and Description |
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static MemoryCompactionPolicy |
valueOf(String name)
Returns the enum constant of this type with the specified name.
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static MemoryCompactionPolicy[] |
values()
Returns an array containing the constants of this enum type, in
the order they are declared.
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public static final MemoryCompactionPolicy NONE
public static final MemoryCompactionPolicy BASIC
public static final MemoryCompactionPolicy EAGER
public static final MemoryCompactionPolicy ADAPTIVE
public static MemoryCompactionPolicy[] values()
for (MemoryCompactionPolicy c : MemoryCompactionPolicy.values()) System.out.println(c);
public static MemoryCompactionPolicy valueOf(String name)
name
- the name of the enum constant to be returned.IllegalArgumentException
- if this enum type has no constant with the specified nameNullPointerException
- if the argument is nullCopyright © 2007–2020 The Apache Software Foundation. All rights reserved.