Package org.apache.cassandra.index.sai

Class SSTableContext

java.lang.Object

org.apache.cassandra.utils.concurrent.SharedCloseableImpl

org.apache.cassandra.index.sai.SSTableContext

All Implemented Interfaces:

java.lang.AutoCloseable, SharedCloseable

public class SSTableContext
extends SharedCloseableImpl

An SSTableContext is created for an individual sstable and is shared across column indexes to track per-sstable index files.

The SSTableContext will be released when receiving a sstable removed notification, but its shared copies in individual SSTableIndexes will be released when in-flight read requests complete.

Field Summary

Fields

Modifier and Type	Field	Description
IndexDescriptor	indexDescriptor
PrimaryKeyMap.Factory	primaryKeyMapFactory
SSTableReader	sstable

Method Summary

Modifier and Type	Method	Description
static SSTableContext	create(SSTableReader sstable)
Descriptor	descriptor()
long	diskUsage()
boolean	equals(java.lang.Object o)
int	hashCode()
SSTableIndex	newSSTableIndex(StorageAttachedIndex index)	Returns a new SSTableIndex for a per-column index
int	openFilesPerSSTable()
SSTableContext	sharedCopy()
java.lang.String	toString()

Methods inherited from class org.apache.cassandra.utils.concurrent.SharedCloseableImpl

addTo, close, close, isCleanedUp

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

sstable

public final SSTableReader sstable

indexDescriptor

public final IndexDescriptor indexDescriptor

primaryKeyMapFactory

public final PrimaryKeyMap.Factory primaryKeyMapFactory

Method Detail

create

public static SSTableContext create(SSTableReader sstable)

sharedCopy

public SSTableContext sharedCopy()

Returns:

a new instance of the object representing the same state and backed by the same underlying resources. Coordinates with the original (and other instances) when the underlying resource should be closed. Throws an exception if the shared resource has already been closed.

newSSTableIndex

public SSTableIndex newSSTableIndex(StorageAttachedIndex index)

Returns a new SSTableIndex for a per-column index

descriptor

public Descriptor descriptor()

Returns:

descriptor of attached sstable

diskUsage

public long diskUsage()

Returns:

disk usage (in bytes) of per-sstable index files

openFilesPerSSTable

public int openFilesPerSSTable()

Returns:

number of open files per SSTableContext instance

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object