com.datastax.driver.core.schemabuilder

Class TableOptions.CompressionOptions.NoCompression

java.lang.Object

com.datastax.driver.core.schemabuilder.TableOptions.CompressionOptions

com.datastax.driver.core.schemabuilder.TableOptions.CompressionOptions.NoCompression

Enclosing class:

TableOptions.CompressionOptions

public static class TableOptions.CompressionOptions.NoCompression
extends TableOptions.CompressionOptions

Nested Class Summary

Nested classes/interfaces inherited from class com.datastax.driver.core.schemabuilder.TableOptions.CompressionOptions

TableOptions.CompressionOptions.Algorithm, TableOptions.CompressionOptions.NoCompression

Constructor Summary

Constructors

Constructor and Description
NoCompression()

Method Summary

Modifier and Type	Method and Description
TableOptions.CompressionOptions	withChunkLengthInKb(Integer chunkLengthInKb) On disk, SSTables are compressed by block to allow random reads.
TableOptions.CompressionOptions	withCRCCheckChance(Double crcCheckChance) When compression is enabled, each compressed block includes a checksum of that block for the purpose of detecting disk bitrate and avoiding the propagation of corruption to other replica.

Methods inherited from class com.datastax.driver.core.schemabuilder.TableOptions.CompressionOptions

build

Methods inherited from class java.lang.Object

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

Constructor Detail

NoCompression

public NoCompression()

Method Detail

withChunkLengthInKb

public TableOptions.CompressionOptions withChunkLengthInKb(Integer chunkLengthInKb)

Description copied from class: TableOptions.CompressionOptions

On disk, SSTables are compressed by block to allow random reads. This subproperty of compression defines the size (in KB) of the block. Values larger than the default value might improve the compression rate, but increases the minimum size of data to be read from disk when a read occurs. The default value is a good middle-ground for compressing tables. Adjust compression size to account for read/write access patterns (how much data is typically requested at once) and the average size of rows in the table.

If no call is made to this method, the default value set by Cassandra is 54.

Overrides:

withChunkLengthInKb in class TableOptions.CompressionOptions

Parameters:

chunkLengthInKb - the new value.

Returns:

this object (for call chaining).

withCRCCheckChance

public TableOptions.CompressionOptions withCRCCheckChance(Double crcCheckChance)

Description copied from class: TableOptions.CompressionOptions

When compression is enabled, each compressed block includes a checksum of that block for the purpose of detecting disk bitrate and avoiding the propagation of corruption to other replica. This option defines the probability with which those checksums are checked during read. By default they are always checked. Set to 0 to disable checksum checking and to 0.5, for instance, to check them on every other read.

If no call is made to this method, the default value set by Cassandra is 1.0 (always check).

Overrides:

withCRCCheckChance in class TableOptions.CompressionOptions

Parameters:

crcCheckChance - the new value.

Returns:

this object (for call chaining).