Package org.apache.cassandra.io.sstable.format.big

Class IndexSummaryComponent

java.lang.Object

org.apache.cassandra.io.sstable.format.big.IndexSummaryComponent

public class IndexSummaryComponent
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
final DecoratedKey	first
final IndexSummary	indexSummary
final DecoratedKey	last

Constructor Summary

Constructors

Constructor	Description
IndexSummaryComponent(IndexSummary indexSummary, DecoratedKey first, DecoratedKey last)

Method Summary

Modifier and Type	Method	Description
static IndexSummaryComponent	load(File summaryFile, TableMetadata metadata)	Load index summary, first key and last key from Summary.db file if it exists.
static Pair<DecoratedKey,DecoratedKey>	loadFirstAndLastKey(File summaryFile, IPartitioner partitioner)
static IndexSummaryComponent	loadOrDeleteCorrupted(File summaryFile, TableMetadata metadata)
void	save(File summaryFile, boolean deleteOnFailure)	Save index summary to Summary.db file.

Methods inherited from class java.lang.Object

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

Field Details

indexSummary

public final IndexSummary indexSummary

first

public final DecoratedKey first

last

public final DecoratedKey last

Constructor Details

IndexSummaryComponent

public IndexSummaryComponent(IndexSummary indexSummary,
 DecoratedKey first,
 DecoratedKey last)

Method Details

loadFirstAndLastKey

public static Pair<DecoratedKey,DecoratedKey> loadFirstAndLastKey(File summaryFile,
 IPartitioner partitioner)
                                                           throws IOException

Throws:

IOException

load

public static IndexSummaryComponent load(File summaryFile,
 TableMetadata metadata)
                                  throws IOException

Load index summary, first key and last key from Summary.db file if it exists.

if loaded index summary has different index interval from current value stored in schema, then Summary.db file will be deleted and need to be rebuilt.

Throws:

IOException

loadOrDeleteCorrupted

public static IndexSummaryComponent loadOrDeleteCorrupted(File summaryFile,
 TableMetadata metadata)
                                                   throws IOException

Throws:

IOException

save

public void save(File summaryFile,
 boolean deleteOnFailure)
          throws IOException

Save index summary to Summary.db file.

Throws:

IOException