org.apache.cassandra.db.compaction.writers

Class DefaultCompactionWriter

java.lang.Object

org.apache.cassandra.utils.concurrent.Transactional.AbstractTransactional

org.apache.cassandra.db.compaction.writers.CompactionAwareWriter

org.apache.cassandra.db.compaction.writers.DefaultCompactionWriter

All Implemented Interfaces:

java.lang.AutoCloseable, Transactional

public class DefaultCompactionWriter
extends CompactionAwareWriter

The default compaction writer - creates one output file in L0

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.cassandra.utils.concurrent.Transactional.AbstractTransactional

Transactional.AbstractTransactional.State

Nested classes/interfaces inherited from interface org.apache.cassandra.utils.concurrent.Transactional

Transactional.AbstractTransactional

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	logger

Fields inherited from class org.apache.cassandra.db.compaction.writers.CompactionAwareWriter

cfs, estimatedTotalKeys, maxAge, minRepairedAt, nonExpiredSSTables, sstableWriter

Constructor Summary

Constructors

Constructor and Description
DefaultCompactionWriter(ColumnFamilyStore cfs, LifecycleTransaction txn, java.util.Set<SSTableReader> nonExpiredSSTables, boolean offline, OperationType compactionType)

Method Summary

Modifier and Type	Method and Description
boolean	append(AbstractCompactedRow row) Writes a row in an implementation specific way
long	estimatedKeys() estimated number of keys we should write

Methods inherited from class org.apache.cassandra.db.compaction.writers.CompactionAwareWriter

doAbort, doCommit, doPrepare, finish, getDirectories, getWriteDirectory

Methods inherited from class org.apache.cassandra.utils.concurrent.Transactional.AbstractTransactional

abort, abort, close, commit, commit, doPostCleanup, doPreCleanup, permitRedundantTransitions, prepareToCommit, state

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.utils.concurrent.Transactional

abort, commit, prepareToCommit

Methods inherited from interface java.lang.AutoCloseable

close

Field Detail

logger

protected static final org.slf4j.Logger logger

Constructor Detail

DefaultCompactionWriter

public DefaultCompactionWriter(ColumnFamilyStore cfs,
                               LifecycleTransaction txn,
                               java.util.Set<SSTableReader> nonExpiredSSTables,
                               boolean offline,
                               OperationType compactionType)

Method Detail

append

public boolean append(AbstractCompactedRow row)

Description copied from class: CompactionAwareWriter

Writes a row in an implementation specific way

Specified by:

append in class CompactionAwareWriter

Parameters:

row - the row to append

Returns:

true if the row was written, false otherwise

estimatedKeys

public long estimatedKeys()

Description copied from class: CompactionAwareWriter

estimated number of keys we should write

Overrides:

estimatedKeys in class CompactionAwareWriter