# Package org.apache.cassandra.io.sstable

Interface Summary
IndexSummaryManagerMBean
ISSTableScanner: An ISSTableScanner is an abstraction allowing multiple SSTableScanners to be chained together under the hood.
SSTableMultiWriter

Class Summary
BloomFilterTracker
Component: SSTables are made up of multiple components in separate files.
CQLSSTableWriter: Utility to write SSTables.
CQLSSTableWriter.Builder: A Builder for a CQLSSTableWriter object.
Descriptor: A SSTable is described by the keyspace and column family it contains data for, a generation (where higher generations contain more recent data) and an alphabetic version string.
Downsampling
IndexInfo: `IndexInfo` is embedded in the indexed version of `RowIndexEntry`.
IndexInfo.Serializer
IndexSummary
IndexSummary.IndexSummarySerializer
IndexSummaryBuilder
IndexSummaryBuilder.ReadableBoundary: Represents a boundary that is guaranteed fully readable in the summary, index file and data file.
IndexSummaryManager: Manages the fixed-size memory pool for index summaries, periodically resizing them in order to give more memory to hot sstables and less memory to cold sstables.
IndexSummaryRedistribution
KeyIterator
ReducingKeyIterator: Caller must acquire and release references to the sstables used here.
SimpleSSTableMultiWriter
SnapshotDeletingTask
SSTable: This class is built on top of the SequenceFile.
SSTableIdentityIterator
SSTableLoader: Cassandra SSTable bulk loader.
SSTableLoader.Client
SSTableRewriter: Wraps one or more writers as output for rewriting one or more readers: every sstable_preemptive_open_interval_in_mb we look in the summary we're collecting for the latest writer for the penultimate key that we know to have been fully flushed to the index file, and then double check that the key is fully present in the flushed data file.
SSTableSimpleIterator: Utility class to handle deserializing atom from sstables.
SSTableTxnWriter: A wrapper for SSTableWriter and LifecycleTransaction to be used when the writer is the only participant in the transaction and therefore it can safely own the transaction.

Enum Summary
Component.Type

Exception Summary
CorruptSSTableException